Overv/Open.GL — pull request #8 by tchieze (2013-12-22 01:06:27+00:00)
Title: Typo fix in context.md

There is a very minor typo in context.md that I found as I was learning OpenGL.
![screenshot from 2013-12-21 11 03 04](https://f.cloud.github.com/assets/5475372/1797057/3e9bd038-6aa5-11e3-8cf9-6ac43cbe3bc0.png)