Add Spree E-Commerce

README.md

@@ -367,6 +367,7 @@ _Recipe management_
 * [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`
 * [Shoop](https://www.shoop.io/) - Django powered fully customizable open source e-commerce framework for small and large sites. ([B2C demo](https://demo1.shoop.io/), [B2B demo](https://demo2.shoop.io/), [Source Code](https://github.com/shoopio/shoop)) `AGPLv3` `Python`
 * [WooCommerce](https://www.woothemes.com/woocommerce/) - WordPress based e-commerce solution. ([Source Code](https://github.com/woothemes/woocommerce)) `GPL` `PHP`
+* [SpreeCommerce](https://spreecommerce.com/) - Spree is a complete open source e-commerce solution for Ruby on Rails. ([Source Code](https://github.com/spree/spree)) `BSD` `Ruby`
 
 
 ## Document Archiving