Merge pull request #51 from snhack/attach

New matrix equiv of attach, chainable connectors
rebuild
corrected assembly view directories

fixes bug with multiple machine assembly views overwriting each other
printed part code split out to /printedparts
Updated driver posts, added switch
starting FTDI breakout
Merge branch 'master' into electronics
Basic FTDIBreakout model

Based on sparkfun product
Merge pull request #52 from snhack/electronics

Basic FTDIBreakout vitamin
Merge branch 'master' into attach
Animated assemblies