decreased number of samples per bit, bug fixes

decreased number of samples per bit about 5 times, thus decreasing
overhead by spending less time in the interrupt routine and increasing
accuracy because we have 5 times less chance to pickup a corrupted
sample by random noise.
git config file deleted
cleanup
ATMega8 fix + 1Mhz support
RX for different speeds

16.5 Mhz support for  '85 is back,
RX support receiving speeds of 1000, 2000, 4000, 8000 and 16000 bps
Merge pull request #9 from cano64/master

Changed clock prescalers and number of samples taken, bug fixes