fix spip source code, license/lang and description

README.md

@@ -296,7 +296,7 @@ CMS are a practical way to setup a website with many features. CMS often come wi
   * [Pimcore](http://www.pimcore.org) Multi-Channel Experience and Engagement Management Platform ([Source code](https://github.com/pimcore/pimcore)) `BSD` `PHP`
   * [Redaxscript](http:/redaxscript.com) - Ultra lightweight CMS for MySQL, SQLite and PostgreSQL ([Demo](http://demo.redaxscript.com/demo/login), [Source Code](https://github.com/redaxmedia/redaxscript)) `GPLv3` `PHP`
   * [SilverStripe](https://www.silverstripe.org) - easy to use CMS with powerful MVC framework underlying. ([Demo](http://demo.silverstripe.org/), [Source code](https://github.com/silverstripe)) `BSD` `PHP`
-  * [SPIP](http://www.spip.net/fr) - Publication system for the Internet.
+  * [SPIP](http://www.spip.net/fr) - Publication system for the Internet aimed at collaborative work, multilingual environments, and simplicity of use for web authors. ([Source code](https://core.spip.net/projects/spip/repository)) `GPLv2` `PHP`
   * [TYPO3](http://typo3.org/) - A powerful and advanced CMS with a large community. ([Source Code](https://github.com/TYPO3/TYPO3.CMS)) `GPLv2` `PHP`
   * [Wordpress](https://wordpress.org/) - The worlds most-used blogging and CMS engine. ([Source code mirror](https://github.com/WordPress/WordPress)) `GPLv2`