Kurt Eckhardt cdb4628d85 T4: Support legacy (pre SPI.transaction) methods The code would fail if the user did an SPI.transfer without calling SPI.beginTransaction. So begin now calls beginTransaction with default parameters. Also put in an implemention for SPI.setClockDivider as well as SPI.setDataMode They appear to work OK... Tried to do with out changing any of the current functionality other than to call begin/end transaction in begin to get to a stable state.		pirms 5 gadiem
examples	Example setup code bug	pirms 7 gadiem
README.md	Update readme	pirms 10 gadiem
SPI.cpp	T4: Support legacy (pre SPI.transaction) methods	pirms 5 gadiem
SPI.h	T4: Support legacy (pre SPI.transaction) methods	pirms 5 gadiem
keywords.txt	Add SPI Buffer functions	pirms 7 gadiem
library.properties	Add library.properties	pirms 8 gadiem

SPI Library for Teensy