Merge pull request #51 from brightredchilli/keycodes

added some keyCode parsing
adding lauren test
Merge branch 'master' of github.com:lmccart/processing-js
adding focused closes #35
adding push and pop style closes #33
Update api.md
Update api-progress.md
fixed getNormalizedColor, fixed color() type
rehashed getCSSRGBColor
finishing string functions, fixing things closes #36
implemented mouseButton on chrome, FF waiting because of other, unrelated bugs
Update extensions.md
checking on keycode and str stuff
preliminary pvector definitions and method implementations
fleshed out PVector add functions
implemented sub and mult
implemented div()
implemented dot
implemented PVector cross product
added empty method definitions