Add list of contributors

CONTRIBUTORS.md

@@ -0,0 +1,22 @@
+Contributors
+============
+
+* [Ajay Bhargav](https://github.com/ajaybhargav)
+* [Anton Sergeev](https://github.com/anton-sergeev)
+* [Christian Schulze](https://github.com/ChristianSch)
+* [Dave Gamble](https://github.com/DaveGamble)
+* [dieyushi](https://github.com/dieyushi)
+* [Dongwen Huang (黄东文)](https://github.com/DongwenHuang)
+* [ecksun](https://github.com/ecksun)
+* [Evan Todd](https://github.com/etodd)
+* [Fabrice Fontaine](https://github.com/ffontaine)
+* [IvanVoid](https://github.com/npi3pak)
+* [Jonathan Fether](https://github.com/jfether)
+* [Kevin Branigan](https://github.com/kbranigan)
+* [Max Bruckner](https://github.com/FSMaxB)
+* [Rafael Leal Dias](https://github.com/rafaeldias)
+* [Rod Vagg](https://github.com/rvagg)
+* [Roland Meertens](https://github.com/rmeertens)
+* [Weston Schmidt](https://github.com/schmidtw)
+
+And more people on [SourceForge](https://sourceforge.net/p/cjson/bugs/search/?q=status%3Aclosed-rejected+or+status%3Aclosed-out-of-date+or+status%3Awont-fix+or+status%3Aclosed-fixed+or+status%3Aclosed&page=0)