Add water pump driver, gpio header.  Some cleanup (relocated temp driver
to sensor folder).  Therm not compiled in as it needs to be cleaned up
first.

 Changes to be committed:
	modified:   main/debug.c
	modified:   main/debug.h
	new file:   main/gpio.h
	modified:   main/main.c
	modified:   main/makefile
	new file:   main/pump.c
	new file:   main/pump.h
	modified:   main/pwm.c
	modified:   main/pwm.h
	new file:   sensor/temp.c
	new file:   sensor/temp.h
Merge branch 'master' of https://github.com/tingx2/sous_vide

Conflicts:
	main/debug.c
	main/debug.h
	main/main.c
	main/makefile

Merge latest changes after resolving some conflicts.

 Changes to be committed:
	modified:   main/main.c
	modified:   main/makefile
	modified:   main/therm.c
	modified:   main/therm.h
	modified:   main/types.h