Add first pcb layout
Modify to the version send to OSH Park
Add missing file
Merge branch 'feature/mpu9150-breakout' into develop

Finished the feature with the version that was send to OSH Park. Let's see
how it looks.
Merge branch 'release/0.1'

Tada, the first release: an attempt at a MPU 9150 breakout board. (This
version was send to OSH Park for manufacturing.)