Add Gitter support

vendor/github.com/mrexodia/wray/utils.go

@@ -0,0 +1,10 @@
+package wray
+
+func contains(target string, slice []string) bool {
+  for _, t := range(slice) {
+    if t == target {
+      return true
+    }
+  }
+  return false
+}