Added magnetometer sensor - HMC5883L.
Wrote I2C handler on ordinary read/write instead SMBus interface.
Fixed correct reading HMC5883L registers.
Added Magnetometer self-testing.
Added L3G4200D Gyroscope sensor.
Added ADXL345 accelerometer.
Added ADC I2C for measure battery voltage.
Fixed getting axes data from l3g4200d sensor.
Added Qt creator generic project's files.
Fixed ADC I2C address.
Added firmware for Atmega8 which enable ADC over I2C.
Moved battery level measure from "gpio.c" to sensors.c.
Removed own ADC implementation.