Add screenshot to readme

Author: RVillani

ReadMe.md

@@ -1,6 +1,8 @@
 # Constant Process Priority
 Constantly updates one or more processes' priority level.
 
+![Screenshot](Screenshots/Screen1.png)
+
 ## My purpose
 I've made it so Unreal Engine's ShaderCompileWorker.exe several instances would have a High priority all the time, but you may find another use to it. It's very basic but does what I want it to.
 
@@ -19,4 +21,4 @@ Priority level is set by a number. Possible values are:
  - 0 = Below Normal priority
  - 1 = Normal priority
  - 2 = Above Normal priority
- - 3 = High priority
+ - 3 = High priority