feat(protractor): allow file:// baseUrls

Modified protractor to support testing node-webkit by using string concatenation vs url.resolve() when the baseUrl begins with file://

Closes #1266.

Author: mikemilano

lib/protractor.js

@@ -1042,7 +1042,8 @@ Protractor.prototype.get = function(destination, opt_timeout) {
   var timeout = opt_timeout ? opt_timeout : this.getPageTimeout;
   var self = this;
 
-  destination = url.resolve(this.baseUrl, destination);
+  destination = this.baseUrl.indexOf('file://') === 0 ?
+    this.baseUrl + destination : url.resolve(this.baseUrl, destination);
 
   if (this.ignoreSynchronization) {
     return this.driver.get(destination);