Add Travis config.

PiperOrigin-RevId: 272727174

Author: mattl

.travis.yml

@@ -0,0 +1,19 @@
+language: go
+
+go:
+  - '1.12'
+
+matrix:
+  include:
+    - os: windows
+      env:
+        - TEST_DIR='cli'
+    - os: windows
+      env:
+        - TEST_DIR='spliced'
+
+install:
+  - go get -v ./$TEST_DIR/...
+
+script:
+  - go test -v ./$TEST_DIR/...