Merge pull request #2 from snhack/battery_vitamins

Added battery pack to vitamins, added examples to sandbox
Tweaked MarbleCaster push fitting
Added MicroSwitch.scad model.
StepperDriverBoard stl for test print.
Edited header, and removed module call up.
Initial commit of Arduino Pro Mini/Micro vitamin

Todo: All features other than header holes
Include module for Pro Mini Serial Header
Up issued the version number.
Merge branch 'master' of https://github.com/snhack/LogoBot
Colour and extrude PCB board
Add micro USB port for Pro Micro board
Basic 170 point breadboard vitamin
Add clearance area for board components
exploring Jamie's ProMicro bug
Sandbox for MicroSwitch
Debugging ProMicro
Use ArduinoPro for module and variables prefix
Rename file to match ArduinoPro prefix
Make PCB hole diameter a default parameter
Change some variable names/comments