Removing unused methods from Scene.
Sample renaming/commenting.
Using cobweb for minimal gui.
Cobweb on Windows.

Plain old Arial, as Arial Bold wasn't a recognized typeface.
Thinner border around buttons looks better.
Don't auto-progress through samples.

Since the gui now works on iOS, no longer needed.
Merge pull request #22 from sansumbrella/sample_simplifying

Sample cleanup and GUI replacement