Merge pull request #130 from marcpicaud/master

Add PrestaShop (E-Commerce)

README.md

@@ -206,6 +206,9 @@ CMS are a practical way to setup a website with many features. CMS often come wi
   * [SPIP](http://www.spip.net/fr) - Publication system for the Internet. 
   * [Wordpress](https://wordpress.org/) - The worlds most-used blogging and CMS engine. ([Source code mirror](https://github.com/WordPress/WordPress)) `GPLv2`
   
+### E-commerce
+
+* [PrestaShop](https://www.prestashop.com/) - PrestaShop offers a free, open-source and fully scalable e-commerce solution. ([Demo](http://demo.prestashop.com/), [Source Code](https://github.com/PrestaShop/PrestaShop)) `OSL 3.0` `PHP`
   
 ## Download Tools