Merge pull request #202 from savantaparna/master

Fixing #201 by treating status code 1223 as a success code.

lib/adapters/xhr.js

@@ -54,8 +54,7 @@ module.exports = function xhrAdapter(resolve, reject, config) {
       headers: responseHeaders,
       config: config
     };
-    // Resolve or reject the Promise based on the status
-    ((request.status >= 200 && request.status < 300) || (!('status' in request) && request.responseText) ?
+    ((request.status >= 200 && request.status < 300) || (request.status === 1223) || (!('status' in request) && request.responseText) ?
       resolve :
       reject)(response);