Optional commit: added Arduino binaries to .gitignore and switched to Leonardo for Makefile.
Merge branch 'hydro-devel' into adc
Tweaking to make ADC driver work.
Merge branch 'hydro-devel' into adc

Conflicts:
	arduino_interface/src/arduino_interface.cpp
Merge pull request #1 from proan/adc

Merge adc_driver
Fixed encoder_driver to work as built-in device. Builds and runs.
Merge pull request #2 from proan/encoder

Working encoder driver
Added newline to end of .gitignore.
Merge remote-tracking branch 'origin/hydro-devel' into hydro-devel
Merge pull request #24 from proan/hydro-devel

Merge adc_driver and encoder_driver.