Create canvas maker

I added a method to create a canvas element. I'm not entirely sure as to whether or not it will work. I tried it in JSBin, and it showed up, but my image that I tried to make didn't show up (but I may have been doing something wrong).

Features Implemented:
*  Base method for creating the canvas -    DrawingBoard()
*  Inline method for changing canvas size -    setSize(height, width)
*  Inline method for changing canvas background-color -    setColor(color)