Return properly formatted mobileService in ServiceHandler()
diff --git a/servers/rps/rps.py b/servers/rps/rps.py
index 1f8f115..7ca8e0f 100755
--- a/servers/rps/rps.py
+++ b/servers/rps/rps.py
@@ -861,7 +861,7 @@
     @tornado.gen.engine
     def get(self):
         if options.mobileService:
-            params = str(options.mobileService)
+            params = json.dumps(options.mobileService)
             self.write(params)
         else:
             self.set_status(403)