Added callback to the accel_state struct
Started writing tests that the callback is being called.
Added Macros to allow me to shim anonymous classes into c.

There's gotta be a better way to do this, but #yolo...
Added currently failing test to motivate myself to work.
Updated the testutil header to work.

TODO: why didn't the prev one work?
Added basic tests for callback evaluation.
Ignore dSYM file(s)
Cleaned up some formatting in accel_test
Fixing incorrect comment
Added clang-format file
Formatted all code. WOOHOO!
Updated accel library version for sample-accel
Formatted simple-accelerometer.c
I believe I have setup the commit setup script
Cleaned up the clang-format commit hook
added comment describing the change
Merge pull request #40 from shalecraig/1.1.0-save-callback

Added callback to the accel_state struct