Any hardware pin restriction on Capacitive Sensing Library for ATMega2560 board?

We plan to buy Atmega2560 board to experiment with the library.

Is there any restriction, due to ATMega2560 chip hardware, so that some pins are NOT available for use with this library?

http://playground.arduino.cc/Main/CapacitiveSensor?from=Main.CapSense

Many thanks in advance