Merge branch 'master' into develop

README.md

@@ -41,7 +41,7 @@ and
 
     func reachabilityChanged(note: NSNotification) {
 
-        let reachability = note.object as Reachability
+        let reachability = note.object as! Reachability
 
         if reachability.isReachable() {
             if reachability.isReachableViaWiFi() {