Merge pull request #14 from sightmachine/develop

update
Added getFaces() method
Added stretch filter
removed debugging alert statements
Delete Image.coffee~
added test image
Merge branch 'sixth' of https://github.com/chaithuzz2/scv into sixth
Added drawRect() method
Added drawLine() method[2~[2~[2~[2~[2~[2~[2~[2~
Added drawEllipse() method
Added drawCircle() method
Added drawTriangle() method
Added noise filter
Added prewitt kernels
Added prewitt edge detector
Added vibrance  filter.
improves Face detection filter , dont have to type extra code in console
Added reshaper method for use in deformation and a fisheye effect method
Added shrink effect method
Removed the unnecessary draw functions