Fleshed out getting started page, added page for arduino/firmware, moved existing arduino-related stuff from old getting started page to new arduino page.
Created placeholder for processing-related getting started docs (so at least there's no dead link.)
Added content & clarified Arduino / firmware page - Arduino & libs install, flashing new programs.  Added some supporting images. Added brief message to Processing page.
First draft fairly complete for Arduino page.
More or less complete first draft, containing basic info for Arduino & Processing. Pending final BlinkyTape Processing class.
Merge pull request #3 from Threeethan/bt-derp-docs

Merge Ethan's 'Getting Started' Documentation