stubbed out code for WritingUtensil

also declared Content object, because well… we needed to
need to return floats in float functions
drawing a rectangle

not sure why my sphere is not around…
rendering WritingUtensil

found some super helpful cylinder and cone code snippets on [processing
wiki](http://wiki.processing.org/)
added neck_height and removed neck_slope

my cone function makes more sense with neck_height.
using push and pop matrix instead scale and "unscale"
just some minor tweaks
playing with rotation
comments!!!!
Merge branch 'master' of https://github.com/wileycousins-edu/intro_to_programming

Conflicts:
	lessons/writingApp/Content.pde
	lessons/writingApp/WritingUtensil.pde
	lessons/writingApp/writingApp.pde