Merge pull request #38 from LeGeek/zero

cores/arduino/RingBuffer.cpp

cores/arduino/SERCOM.cpp

cores/arduino/Uart.cpp

cores/arduino/Uart.h

cores/arduino/WInterrupts.c

cores/arduino/delay.c

cores/arduino/delay.h

cores/arduino/wiring.c

cores/arduino/wiring_analog.c

cores/arduino/wiring_analog.h

cores/validation/validation_I2C_I01/build_as6/test.atsln

cores/validation/validation_I2C_I01/build_as6/test.cppproj

cores/validation/validation_I2C_I01/test.cpp

cores/validation/validation_I2C_LCD/build_as6/test.atsln

cores/validation/validation_I2C_LCD/build_as6/test.cppproj

cores/validation/validation_I2C_LCD/test.cpp

...dation/validation_I2C_multi/build_as6/LiquidCrystal_I2C.h

cores/validation/validation_I2C_multi/build_as6/test.atsln

cores/validation/validation_I2C_multi/build_as6/test.cppproj

cores/validation/validation_I2C_multi/test.cpp