updated with speed control pid
update
updated gitignore
Merge branch 'master' of https://github.com/nkming2/IntelliCar14.git

Conflicts:
	src/magnetic/magnetic_app.cpp
Merge branch 'master' of https://github.com/nkming2/IntelliCar14.git

Conflicts:
	src/magnetic/car.cpp
	src/magnetic/car.h
	src/magnetic/magnetic_app.h