IE9 fix for cors api calls are timing out prematurely

lib/adapters/xhr.js

@@ -35,6 +35,10 @@ module.exports = function xhrAdapter(resolve, reject, config) {
   // Set the request timeout in MS
   request.timeout = config.timeout;
 
+  // For IE 9 CORS support.
+  request.onprogress = function() {};
+  request.ontimeout = function() {};
+
   // Listen for ready state
   request.onload = function handleLoad() {
     if (!request) {