Merge branch 'master' of https://github.com/ethereum/ethereum.js

lib/web3.js

@@ -505,4 +505,5 @@ function messageHandler(data) {
     }
 }
 
+if (typeof(module) !== "undefined")
     module.exports = web3;

lib/websocket.js

@@ -74,4 +74,5 @@ Object.defineProperty(WebSocketProvider.prototype, "onmessage", {
     set: function(provider) { this.onMessage(provider); }
 });
 
+if (typeof(module) !== "undefined")
     module.exports = WebSocketProvider;