dont require () at end of requires

lib/cmd.js

@@ -1,7 +1,7 @@
 var program = require('commander');
 var colors = require('colors');
 var shelljs = require('shelljs');
-var Embark = require('../lib/index')();
+var Embark = require('../lib/index');
 
 var Cmd = function() {
   program.version(Embark.version);

lib/index.js

@@ -196,7 +196,7 @@ var Embark = function () {
     upload: upload
   };
 
-};
+}();
 
 Embark.initTests = function() {
   console.error("=============================".green);