Merge pull request #741 from model3volution/Update/readme

adding sample code to GET images

README.md

@@ -125,6 +125,18 @@ axios({
 });
 ```
 
+```js
+// GET request for remote image
+axios({
+  method:'get',
+  url:'http://bit.ly/2mTM3nY',
+  responseType:'stream'
+})
+  .then(function(response) {
+  response.data.pipe(fs.createWriteStream('ada_lovelace.jpg'))
+});
+```
+
 ##### axios(url[, config])
 
 ```js