Added FateRoll as subclass of DiceRoll.

Added RSpec tests for FateRoll methods and tests
And overridden #results method.

Updated dice executable to accept -f --fate switches.

TO DO: Tests for FateRoll#convert_dice_to_fate
and #get_fate_total.

Update documentation.

Update and rebuild gem.
Tests complete for FateRoll#convert_dice_to_fate and #get_fate_total
Rebuilt RDocs
Rebuilt gem as version 1.1.1