First attempt at making utils.py compatible with Python 2 and 3.
Added a condition in prompt_yes_or_no() to use input or raw_input
Merge branch 'master' of github.com:erikcox/cheat into erikcox-master

* 'master' of github.com:erikcox/cheat:
  Added a condition in prompt_yes_or_no() to use input or raw_input
  First attempt at making utils.py compatible with Python 2 and 3.