First working revision using libhidapi
Use constants for vendor and product id, so we don't need a device path passed in
More work to get the pedal working in pd again.  Read returns a tri-state int now rather than boolean.
Cleanup dead comment blocks
Store last button state
Add mutex back in to support multiple instances of the object.  Fix up help (device no longer required).
Remove dead comments in Makefile
Update README.md
Merge pull request #1 from breedx2/switch_to_hidapi

Switch to hidapi