for Arduino Due (_SAM3XA_), substitute UARTClass for HardwareSerial
increase SerialClient timeout to 0.05 sec
workaround digitalRead() misbehavior on Arduino Due https://github.com/arduino/Arduino/issues/1533
rosserial for PSoC4 ARM-M0 (initial commit)
Merge branch 'hydro-devel' of https://github.com/chuck-h/rosserial into hydro-devel