Update README.md

Author: Daniel Franze

README.md

@@ -24,9 +24,11 @@ Installation
 1. Clone this Repository
 2. Open it with IntelliJ IDEA (with Scala plugin)
 3. Change in "public\javascripts\app.js" the line 5 (for local usage):
-```scala
+```javascript
 var scheme   = "ws://";
 ```
+* local mode: "ws://"
+* production mode: "wss://"
 
 4. Start Play