fix #12 make the default route discovery work again.

vastly simpler.
create release 2.1.0.
also fix #9 as a release is made.

corrected documentation for v2, incr'd version to 2.0.1.

2.0.0: protocol update, to support chat messages.

1.2.0 release: Transmit() limited to nav sync only; added setBeaconCo…

…unt() and setUser()

toolchain filename is now all lowercase