Tried @rougier's suggestion to fix the bug.
Fixed fix.
Got rid of ctypes in the fix.
Merge pull request #254 from vispy/bug-multiple-programs

Tried @rougier's suggestion to fix the bug.
Add start_shaders script.
Style issues in start_shaders.
Merge pull request #265 from rossant/start-shaders

Add start_shaders script
fix bug in game-of-life.py
Merge pull request #266 from gouarin/master

fix bug in game-of-life.py