Updates description for cartulary and removes duplicate link

README.md

@@ -339,7 +339,7 @@ _[IPBX](https://en.wikipedia.org/wiki/IP_PBX) telephony software_
   * [Bootcamp](http://trybootcamp.vitorfs.com) - An enterprise social network. ([Source Code](https://github.com/vitorfs/bootcamp)) `MIT` `Python`
   * [Buddycloud](http://buddycloud.com/) - Tools, libraries, services and a community to build user-to-user, group and social messaging into your app. Saves time. Scales up. Supports you. ([Source Code](https://github.com/buddycloud)) `Apache` `Java`
   * [BuddyPress](https://buddypress.org/about/) - A powerful plugin that takes your WordPress.org powered site beyond the blog with social-network features like user profiles, activity streams, user groups, and more. ([Source Code](https://buddypress.svn.wordpress.org/trunk/)) `GPLv2` `PHP`
-  * [cartulary](https://github.com/daveajones/cartulary) - A web-based digital archiver. ([Source Code](https://github.com/daveajones/cartulary)) `CDDL` `PHP`
+  * [cartulary](https://github.com/daveajones/cartulary) - RSS reader, readability tool, article archiver, microblogger, social graph manager and reading list manager. `CDDL` `PHP`
   * [diaspora*](https://diasporafoundation.org/) - Distributed social networking server. ([Demo](http://podupti.me/random.php), [Source Code](https://github.com/diaspora/diaspora)) `AGPLv3` `Ruby`
   * [Discourse](http://www.discourse.org/) - Advanced forum / community solution based on Ruby and JS. ([Source Code](https://github.com/discourse/discourse)) `GPLv2` `Ruby`
   * [Elgg](https://elgg.org/) - A powerful open source social networking engine. ([Source Code](https://github.com/Elgg/Elgg)) `GPLv2` `PHP`