Added language provider, fixed race condition on emulator

public/emulator.html

@@ -34,6 +34,10 @@
     <script type="text/javascript" language="javascript">
       let scriptElement = null;
 
+      let initInterval = setInterval(() => {
+        send({ message: 'iframe_loaded' });
+      }, 500);
+
       EJS_player = "#game";
       EJS_pathtodata = "https://cdn.emulatorjs.org/stable/data/";
       EJS_language = "en-US";
@@ -77,6 +81,8 @@
         scriptElement = document.createElement('script');
         scriptElement.src = 'https://cdn.emulatorjs.org/stable/data/loader.js';
         document.body.appendChild(scriptElement);
+
+        clearInterval(initInterval);
       }
 
       const send = data => {
@@ -145,7 +151,7 @@
 
       EJS_onGameStart = () => {
         send({ message: 'start' });
-      }
+      }      
     </script>
   </body>
 </html>