Add json-voorhees closing issue fffaraz#86.

Author: jzbl

README.md

@@ -309,6 +309,7 @@ A curated list of awesome C/C++ frameworks, libraries, resources, and shiny thin
 * [JsonCpp](https://github.com/open-source-parsers/jsoncpp) - A C++ library for interacting with JSON. [MIT]
 * [json-parser](https://github.com/udp/json-parser) - Very low footprint JSON parser written in portable ANSI C. [BSD]
 * [json11](https://github.com/dropbox/json11) - A tiny JSON library for C++11. [MIT]
+* [json-voorhees](https://github.com/tgockel/json-voorhees) - JSON library for C++. Support for C++11. No dependencies, fast and dev-friendly. [Apache2]
 * [jute](https://github.com/amir-s/jute) - Very simple C++ JSON Parser. [PublicDomain]
 * [libjson](https://github.com/vincenthz/libjson) - A JSON parser and printer library in C. easy to integrate with any model. [LGPL]
 * [libjson](http://sourceforge.net/projects/libjson/) - Lightweight JSON library. [?]