Remove reference to S3 in Nimbus description

README.md

@@ -271,7 +271,7 @@ CMS are a practical way to setup a website with many features. CMS often come wi
   * [Jyraphe](http://home.gna.org/jyraphe/) - Jyraphe is a web application of file repository, easy to install and easy to use.
   * [lutim](https://github.com/ldidry/lutim) - Let's Upload That Image !
   * [Mediacrush](https://mediacru.sh/) - a website you can upload images, audio, and video to, and receive a link to share it with your friends ([Source code](https://github.com/MediaCrush/MediaCrush))
-  * [Nimbus](https://github.com/ethanal/nimbus) - An S3-backed drag-and-drop shortlink file sharer for OS X - `MIT` `Python`
+  * [Nimbus](https://github.com/ethanal/nimbus) - A drag-and-drop shortlink file sharer for OS X - `MIT` `Python`
   * [OnionShare](https://onionshare.org/) - securely and anonymously share a file of any size.
   * [ownCloud](https://owncloud.org/) - All-in-one solution for saving and sharing files, photos, music- `AGPLv3` `PHP`
   * [Pomf](https://github.com/nokonoko/Pomf) -  Simple file uploading and sharing, source for the now shut down site Pomf.se `MIT` `PHP/Nodejs`