Allow sphero gem to optionally use rs232 gem for serial communication#2

Open

macumber wants to merge 2 commits intotenderlove:masterfrom

macumber:master

Commits on Jul 18, 2013

Porting sphero to use RS232 gem instead of serialport which did not work for me on Windows 7
macumber
committed

Commits on Jul 24, 2013

Adding conditional logic to use RS232 or serialport
macumber
committed