Added some e-commerce awesome

README.md

@@ -219,9 +219,11 @@ CMS are a practical way to setup a website with many features. CMS often come wi
   
 ### E-commerce
 
+* [OpenCart](https://www.opencart.com) - Free open source shopping cart solution. ([Source code](https://github.com/opencart/opencart)) `GPLv3` `PHP`
 * [Open Classifieds](http://open-classifieds.com/) - Free open-source, self-hosted CMS for classifieds sites. ([Source code](https://github.com/open-classifieds/openclassifieds2))  `GPL` `PHP`
 * [Open eShop](http://open-eshop.com/) - Sell your digital goods with licenses and provide support. ([Source code](https://github.com/open-classifieds/open-eshop))  `GPL` `PHP`
 * [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`
+* [WooCommerce](http://www.woothemes.com/woocommerce/) - WordPress based e-commerce solution ([Source Code](https://github.com/woothemes/woocommerce)) `GPL` `PHP`
   
 ## Download Tools