Update README.md

README.md

 **STATUS: project is being rewritten from scratch in https://github.com/gre/gl-react. It will be the next v3. The React Native implementation will soon be available.**
 
 
-**[Gitbook documentation](http://projectseptemberinc.gitbooks.io/gl-react/content/) / [Github](https://github.com/ProjectSeptemberInc/gl-react-native/) / [gl-react](https://github.com/ProjectSeptemberInc/gl-react/)** / [#gl-react on reactiflux](https://discordapp.com/channels/102860784329052160/106102146109325312)
+**[Gitbook documentation](https://github.com/ProjectSeptemberInc/gl-react/tree/master/docs) / [Github](https://github.com/ProjectSeptemberInc/gl-react-native/) / [gl-react](https://github.com/ProjectSeptemberInc/gl-react/)** / [#gl-react on reactiflux](https://discordapp.com/channels/102860784329052160/106102146109325312)
 
 # <img width="32" alt="icon" src="https://cloud.githubusercontent.com/assets/211411/9813786/eacfcc24-5888-11e5-8f9b-5a907a2cbb21.png"> gl-react-native ![](https://img.shields.io/badge/react--native-%200.40.x-05F561.svg) ![](https://img.shields.io/badge/gl--react-%202.2.x-05F561.svg)
 
@@ -13,7 +13,7 @@ OpenGL bindings for React Native to implement complex effects over images and co
 
 ## Documentation
 
-[**Gitbook**](http://projectseptemberinc.gitbooks.io/gl-react/content/)
+[**doc**](https://github.com/ProjectSeptemberInc/gl-react/tree/master/docs)
 
 ## Installation