diff --git a/package-lock.json b/package-lock.json
index fde8157..b190a01 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -17,7 +17,7 @@
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       },
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-      "integrity": "sha1-z9AeD7uj1srtBJ+9dY1A9lGW9Xw=",
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+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
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-      "dev": true,
-      "engines": {
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@@ -211,13 +201,10 @@
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-      "dev": true,
-      "engines": {
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+      "resolved": "https://registry.npmjs.org/async/-/async-3.2.4.tgz",
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@@ -560,20 +547,6 @@
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-      "deprecated": "CoffeeScript on NPM has moved to \"coffeescript\" (no hyphen)",
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@@ -587,6 +560,24 @@
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+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-2.0.1.tgz",
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+      "dev": true,
+      "dependencies": {
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+      "engines": {
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+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.4.tgz",
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@@ -597,9 +588,9 @@
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-      "integrity": "sha1-JCP+ZnisDF2uiFLl0OW+CMmXq8w=",
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-      "integrity": "sha1-sCIMAt6YYXQztyhRz0fePfLNvuk=",
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-      "integrity": "sha1-n1V+CPw7TSbs6d00+Pv0drYlha0=",
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         "esvalidate": "bin/esvalidate.js"
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+        "node": ">=4"
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@@ -1100,9 +1091,9 @@
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-      "integrity": "sha1-p1Xqe8Gt/MWjHOfnYtuq3F5jZEQ=",
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-      "integrity": "sha1-fz56l7gjksZTvwZYm9hRkOk8NoM=",
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       "dev": true,
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-      "deprecated": "Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue",
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-        "sigmund": "~1.0.0"
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-      "resolved": "https://registry.npmjs.org/fined/-/fined-1.1.0.tgz",
-      "integrity": "sha1-s33IRLdqL15wgeiE98CuNE8VNHY=",
+      "version": "1.2.0",
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@@ -1273,12 +1254,12 @@
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-      "integrity": "sha1-Tnmumy6zi/hrO7Vr8+ClaqX8q9c=",
+      "version": "1.0.1",
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-        "node": ">= 0.8.0"
+        "node": ">= 0.10"
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@@ -1336,6 +1317,12 @@
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@@ -1358,12 +1345,12 @@
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-      "integrity": "sha1-BHpEl4n6Fg0Bj1SG7ZEyC27HiFw=",
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@@ -1566,34 +1553,76 @@
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-      "integrity": "sha1-VpN81RlDJK3/bSB2MYMqnWuk5/A=",
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-        "coffee-script": "~1.3.3",
-        "colors": "~0.6.2",
-        "dateformat": "1.0.2-1.2.3",
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-        "underscore.string": "~2.2.1",
-        "which": "~1.0.5"
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+        "nopt": "~3.0.6",
+        "rimraf": "~3.0.2"
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+        "node": ">=8"
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+    "node_modules/grunt-cli": {
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+        "interpret": "~1.1.0",
+        "liftup": "~3.0.1",
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@@ -1661,99 +1690,146 @@
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@@ -7166,12 +7682,14 @@
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-      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.5.0.tgz",
-      "integrity": "sha1-HwmsznlsmnYlefMbLBzEw83fnzY=",
+      "version": "1.22.1",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.22.1.tgz",
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       "dev": true,
       "requires": {
-        "path-parse": "^1.0.5"
+        "is-core-module": "^2.9.0",
+        "path-parse": "^1.0.7",
+        "supports-preserve-symlinks-flag": "^1.0.0"
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@@ -7191,10 +7709,38 @@
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-      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.2.8.tgz",
-      "integrity": "sha1-5Dm+Kq7jJzIZUnMPmaiSnk/FBYI=",
-      "dev": true
+      "version": "3.0.2",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.2.tgz",
+      "integrity": "sha512-JZkJMZkAGFFPP2YqXZXPbMlMBgsxzE8ILs4lMIX/2o0L9UBw9O/Y3o6wFw/i9YLapcUJWwqbi3kdxIPdC62TIA==",
+      "dev": true,
+      "requires": {
+        "glob": "^7.1.3"
+      },
+      "dependencies": {
+        "glob": {
+          "version": "7.2.3",
+          "resolved": "https://registry.npmjs.org/glob/-/glob-7.2.3.tgz",
+          "integrity": "sha512-nFR0zLpU2YCaRxwoCJvL6UvCH2JFyFVIvwTLsIf21AuHlMskA1hhTdk+LlYJtOlYt9v6dvszD2BGRqBL+iQK9Q==",
+          "dev": true,
+          "requires": {
+            "fs.realpath": "^1.0.0",
+            "inflight": "^1.0.4",
+            "inherits": "2",
+            "minimatch": "^3.1.1",
+            "once": "^1.3.0",
+            "path-is-absolute": "^1.0.0"
+          }
+        },
+        "minimatch": {
+          "version": "3.1.2",
+          "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-3.1.2.tgz",
+          "integrity": "sha512-J7p63hRiAjw1NDEww1W7i37+ByIrOWO5XQQAzZ3VOcL0PNybwpfmV/N05zFAzwQ9USyEcX6t3UO+K5aqBQOIHw==",
+          "dev": true,
+          "requires": {
+            "brace-expansion": "^1.1.7"
+          }
+        }
+      }
     },
     "safe-buffer": {
       "version": "5.1.1",
@@ -7589,6 +8135,12 @@
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+    "sprintf-js": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
+      "integrity": "sha512-D9cPgkvLlV3t3IzL0D0YLvGA9Ahk4PcvVwUbN0dSGr1aP0Nrt4AEnTUbuGvquEC0mA64Gqt1fzirlRs5ibXx8g==",
+      "dev": true
+    },
     "static-extend": {
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       "resolved": "https://registry.npmjs.org/static-extend/-/static-extend-0.1.2.tgz",
@@ -7749,6 +8301,12 @@
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       "dev": true
     },
+    "supports-preserve-symlinks-flag": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/supports-preserve-symlinks-flag/-/supports-preserve-symlinks-flag-1.0.0.tgz",
+      "integrity": "sha512-ot0WnXS9fgdkgIcePe6RHNk1WA8+muPa6cSjeR3V8K27q9BB1rTE3R1p7Hv0z1ZyAc8s6Vvv8DIyWf681MAt0w==",
+      "dev": true
+    },
     "through2": {
       "version": "2.0.3",
       "resolved": "https://registry.npmjs.org/through2/-/through2-2.0.3.tgz",
@@ -7966,17 +8524,23 @@
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       "dev": true
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-    "underscore": {
-      "version": "1.7.0",
-      "resolved": "https://registry.npmjs.org/underscore/-/underscore-1.7.0.tgz",
-      "integrity": "sha1-a7rwh3UA02vjTsqlhODbn+8DUgk=",
-      "dev": true
-    },
     "underscore.string": {
-      "version": "2.2.1",
-      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-2.2.1.tgz",
-      "integrity": "sha1-18D6KvXVoaZ/QlPa7pgTLnM/Dxk=",
-      "dev": true
+      "version": "3.3.6",
+      "resolved": "https://registry.npmjs.org/underscore.string/-/underscore.string-3.3.6.tgz",
+      "integrity": "sha512-VoC83HWXmCrF6rgkyxS9GHv8W9Q5nhMKho+OadDJGzL2oDYbYEppBaCMH6pFlwLeqj2QS+hhkw2kpXkSdD1JxQ==",
+      "dev": true,
+      "requires": {
+        "sprintf-js": "^1.1.1",
+        "util-deprecate": "^1.0.2"
+      },
+      "dependencies": {
+        "sprintf-js": {
+          "version": "1.1.2",
+          "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.1.2.tgz",
+          "integrity": "sha512-VE0SOVEHCk7Qc8ulkWw3ntAzXuqf7S2lvwQaDLRnUeIEaKNQJzV6BwmLKhOqT61aGhfUMrXeaBk+oDGCzvhcug==",
+          "dev": true
+        }
+      }
     },
     "union-value": {
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@@ -8254,10 +8818,13 @@
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-      "version": "1.0.9",
-      "resolved": "https://registry.npmjs.org/which/-/which-1.0.9.tgz",
-      "integrity": "sha1-RgwdoPgQED0DIam2M6+eV15kSG8=",
-      "dev": true
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
+      "integrity": "sha512-BLI3Tl1TW3Pvl70l3yq3Y64i+awpwXqsGBYWkkqMtnbXgrMD+yj7rhW0kuEDxzJaYXGjEW5ogapKNMEKNMjibA==",
+      "dev": true,
+      "requires": {
+        "isexe": "^2.0.0"
+      }
     },
     "wrappy": {
       "version": "1.0.2",
diff --git a/package.json b/package.json
index 7dda79e..b7281b8 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,7 @@
     "socket.io": "^1.3.6"
   },
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-    "grunt": "^0.4.5",
+    "grunt": "^1.5.3",
     "grunt-contrib-stylus": "^0.22.0",
     "grunt-contrib-watch": "^0.6.1",
     "gulp": "^3.9.0"