Node js compatibility if statement removed

JIO uses Blob and more HTML5 features which are not implemented in Nodejs.

src/jio/intro.js

@@ -3,9 +3,6 @@
   if (typeof define === 'function' && define.amd) {
     return define(dependencies, module);
   }
-  if (typeof exports === 'object') {
-    return module(exports, require('rsvp'), require('sha256'));
-  }
   window.jIO = {};
   module(window.jIO, RSVP, {hex_sha256: hex_sha256});
 }(['exports', 'rsvp', 'sha256'], function (exports, RSVP, sha256) {