Position and Distance facets -- version 1.0
Add NS-3 path in Makefile.template
Add Rand facet
Add set_position API to position facet
Serial communication facet (using debug facet)
ExtendedDataRadio -- version 1.0
ExtendedDataRadio facet
Tx Power Radio facet -- version 1.0
Merge pull request #52 from dizhizhou/master

Pull request: GSoC'13 Wiselib NS-3 Port -- Position, distance and rand facet