[request] 'class arduino::TwoWire' has no member named 'readBytes'

[runger1101001]

Summary

It doesn't seem to be required but most other Ardunio cores support:

 size_t readBytes( char *buffer, size_t length); 
 size_t readBytes( uint8_t *buffer, size_t length);

It would be nice to add them for compatibility.