fix version number

Author: linkesch

README.md

@@ -21,7 +21,7 @@ Current available addons:
 
 ## Download
 
-* Bower (recommended): ```bower install medium-editor-insert-plugin#^1.0 --save```
+* Bower (recommended): ```bower install medium-editor-insert-plugin#^2.1 --save```
 * Manual: [Download the latest release](https://github.com/orthes/medium-editor-insert-plugin/releases)
 
 
@@ -84,4 +84,4 @@ $(function () {
 
 [creator5](http://www.creator5.com) | [Maker](http://maker.me) | [Nusii](http://nusii.com)
 -------- | ----- | -----
-[![creator5](http://i.imgur.com/K9uiIuT.png)](http://www.creator5.com) | [![Maker](http://i.imgur.com/8t8wsM8.png)](http://maker.me) | [![nusii](http://i.imgur.com/tvdJ249.png)](http://nusii.com)
+[![creator5](http://i.imgur.com/K9uiIuT.png)](http://www.creator5.com) | [![Maker](http://i.imgur.com/8t8wsM8.png)](http://maker.me) | [![nusii](http://i.imgur.com/tvdJ249.png)](http://nusii.com)