[GREP,NMAP,RM,WGET] Add new cheats
add debugging examples for bash
add new command route
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
mount: add bind mount
Merge pull request #183 from ihashacks/master

add debugging examples for bash, add new command route
Merge pull request #188 from Mic92/patch-5

mount: add bind mount
Merge branch 'master' of github.com:ImmortalPC/cheat into ImmortalPC-master

* 'master' of github.com:ImmortalPC/cheat:
  [GREP,NMAP,RM,WGET] Add new cheats
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.
Cherry-picking changes from #185

@zhujian0805 contributed some excellent cheatsheets in #185, but some
binary files seem to have gotten mixed into the commit as well. This
commit cherry-picks the cheatsheet file changes from that PR while
leaving behind the cruft.

Also performed minor editing on some of the cheatsheets.
Merge pull request #189 from chrisallenlane/dev

Cherry-picking changes from #185
adding