Add cheatsheet for yum
Making the default cheats directory Windows-compatible.
Added global flag, replaced redundant redirection.

Not using the 'g' (global) flag only replaces the first match on a line.  The 'g' flag will replace all matches.
Allow suffixes for cheat files (e.g. DataFrames.jl).
Reformat to meet PEP8 style.
Colorize output using Pygment lexers.
Make Pygments a soft dependency.
Add a check for posix environment for pygments.
Explicitly mark comment lines in builtin sheets.
Restored the __init__.py file that I stupidly deleted on a previous commit.
Merge branch 'master' of https://github.com/smartboyathome/cheat into smartboyathome-master

* 'master' of https://github.com/smartboyathome/cheat:
  Making the default cheats directory Windows-compatible.
Minor tweak to @smartboyathome's patch.
Merge pull request #25 from adelviscio/patch-1

Added global flag, replaced redundant redirection.
Resolved a trivial merge conflcit in cheatsheets/sed. Resolved major merge conflict in ./cheat. Made very minor revision to @larsyencken's patch to prevent __init__.py/c files from being listed as cheatsheets.
Made it also necessary to set an environment variable in order to display colors to the terminal (in an effort to avoid an otherwise inevitable holy-war).
Updated the README to include instructions for enabling syntax highlighting.
Trivial changes to the README.
Minor tweak on the last commit.
Gave a shout-out to the 'cheat' RubyGem after it was brought to my attention per issue #22.
More yum commands