Arduino GUI compatibility

Nanpy can be loaded and built inside Arduino GUI 1.0.5 with this patch.

Additional changes:

The firmware directory should be restructured:
nanpy/firmware/Nanpy/Nanpy.ino
or
nanpy/Nanpy/Nanpy.ino

The Nanpy directory should be copied or linked into sketchbook  directory.

I didn't changed the directory names because of possible merge problems.