added CPP version of Motors class
Replaced python nav, pilot and behaviour with c++ versions
merged with previous changes
setup the testing stubs within nav/behaviour/pilot
fixed issue in makefile
added sensing as top-level directory
Merge branch 'master' of https://github.com/nckswt/FARSHAPE into nick-testing

Merging nick-testing with master
Merge branch 'nick-testing' of https://github.com/nckswt/FARSHAPE into chuck-testing
Refactored to objected-oriented code