Merge pull request #47 from AndrewCarterUK/patch-1

Added sitepoint/container to README

Author: Ocramius

README.md

@@ -59,6 +59,7 @@ View open [request for comments](https://github.com/container-interop/container-
 - [Njasm Container](https://github.com/njasm/container)
 - [PHP-DI](http://php-di.org)
 - [PimpleInterop](https://github.com/moufmouf/pimple-interop)
+- [SitePoint Container](https://github.com/sitepoint/Container)
 - [Unbox](https://github.com/mindplay-dk/unbox)
 - [XStatic](https://github.com/jeremeamia/xstatic)
 - [Zend\ServiceManager](https://github.com/zendframework/zend-servicemanager)