Rename axios.createNew to axios.create

lib/axios.js

@@ -55,7 +55,7 @@ var defaultInstance = new Axios();
 
 var axios = module.exports = bind(Axios.prototype.request, defaultInstance);
 
-axios.createNew = function (defaultConfig) {
+axios.create = function (defaultConfig) {
   return new Axios(defaultConfig);
 };