Teensy++2 support with xmem2
Added support for the Arduino Due

Untested
Updated readme and some comments
Disable pull up resistor when using input on the Due
Changed variable name from baseReg to pio
Allow other lock implementations.
Increase SPI speed on the Due to 21MHz
Added some syntax highlighting in the readme
Fix accidental comment paste.
Added information about the need to include the Arduino SPI library when using the Due
Typo correction
Merge branch 'Due'
Typo once again
Merge branch 'xxxajk'