Merge pull request #578 from saulotoledo/Ginq

Added Ginq.

README.md

 * [Fractal](https://github.com/thephpleague/fractal) - A library for converting complex data structures to JSON output.
 * [Totem](https://github.com/Wisembly/Totem) - A library to manage and create data changesets.
 * [PINQ](https://github.com/TimeToogo/Pinq) - A PHP library based on .NET's LINQ (Language Integrated Query).
+* [Ginq](https://github.com/akanehara/ginq) - Another PHP library based on .NET's LINQ.
 * [JsonMapper](https://github.com/netresearch/jsonmapper) - A library that maps nested JSON structures onto PHP classes.
 * [Cake Collection](https://github.com/cakephp/collection) - A simple collections library (CP).