feat: auto discover main module

launch.js

@@ -4,7 +4,7 @@
 	// and the Elm app code
 
 	// here we lanch the app
-	var app = Elm.Main.init({ node: document.getElementById("elm") });
+  Elm[Object.keys(Elm)[0]].init({ node: document.getElementById("elm") });
 
 	document.children[0].dump();