Some Code Refactoring..
Trying out John Resig's Inheritance Style
Revert "Trying out John Resig's Inheritance Style"

This reverts commit eed0876d746736dab903ffa337f035014cdf2d54.
CRAYON.Node base object and other refactoring
Adding particle shader example. WIP
Trying texture reads in fragment shader vs vertex shaders

Doesn't seem to give much performance boost
Fix Optimization Trick

- For speeding up particle rendering
Add simple spinning example
Tweaking particle brush example