Merge pull request #1188 from kaendfinger/master

Groovy: Add .gvy, .grt, and .gtpl to the list of extensions

samples/Groovy/script.gvy

@@ -0,0 +1,2 @@
+#!/usr/bin/env groovy
+println "Hello World"

samples/Groovy/template.grt

@@ -0,0 +1,9 @@
+html {
+  head {
+    component "bootstrap"
+    title "Bootstrap Template"
+  }
+  
+  html {
+  }
+}

samples/Groovy/template.gtpl

@@ -0,0 +1,9 @@
+html {
+  head {
+    title "Example Template"
+  }
+  
+  body {
+    p "This is a quick template example"
+  }
+}