Merge branch 'pr/311'

README.md

 * [JSONPCallbackValidator](https://github.com/willdurand/JsonpCallbackValidator) - A library for validating JSONP callbacks.
 * [Pagerfanta](https://github.com/whiteoctober/Pagerfanta) - A pagination library.
 * [LiteCQRS](https://github.com/beberlei/litecqrs-php) - A CQRS (Command Query Responsibility Separation) library.
+* [Chief](https://github.com/adamnicholson/Chief) - A command bus library.
 * [Sslurp](https://github.com/EvanDotPro/Sslurp) - A library that makes dealing with SSL suck less.
 * [Metrics](https://github.com/beberlei/metrics) - A simple metrics API library.
 * [Sabre VObject](https://github.com/evert/sabre-vobject) - A library for parsing VCard and iCalendar objects.