I2C code on Github

I've been playing with various I2C-based breakout boards.  Finally got around to posting the code on Github.  Currently I've posted code for the following breakout boards:

• Si4703 FM radio receiver
• BMP085 temperature/pressure sensor
• TEA5767 (or RDA5807SP in TEA5767 mode) FM radio receiver

Some of it requires the wiringPi library, though I'm working to remove that dependency (to allow porting the code to the Cubietruck).

Also pending is code for:

• Si4707 weatherband receiver
• a generic lightning sensor