Add some window padding (non-configurable for now): closes #6
Add tee mode. Bump version to 0.1.2
Add some more examples to the README with images
Merge branch 'master' of github.com:apg/grapt

Conflicts:
	README.md
Get width, height from environment if available

 - Refactor str -> int handling
 - Default to environment, falling back to preset width/height