Merge pull request #300 from ajspadial/master

Update rendering.js
saving pointer to context2d for speed
Merge branch 'master' of github.com:lmccart/p5.js
remove size() from createCanvas() docs
fixing long line
package num
examples and p5.sound
license
docs for env
Update README.md
version
Merge branch 'master' of github.com:lmccart/p5.js
p5.sound update, adding yuidoc sound assets
merging upstream changes
removing unused assets
Merge pull request #301 from therewasaguy/master

adding sound assets to yuidoc
Update doc from isMousePressed to mouseIsPressed
Merge pull request #303 from irisyuan/master

Update doc from isMousePressed to mouseIsPressed
newest version