TwoWire Support #103

Problem
Hard coded to &wire

Addition
The ability to select &Wire1

Your library is the only I can find that has the ability to set_freq

I have added twowire support to etherkit_5351 library if you like I can send an email with the modified .h and .cpp

si5351.cpp

the .h file addons
Public:
bool init(uint8_t, uint32_t, int32_t, TwoWire *theWire = &Wire);
private:
TwoWire *_pwire; // Pointer to the TwoWire object