Added definitions to MMD cheat sheet

I wanted to contribute something I had put together for the mmd human readable guide. Hopefully, people will use it.
Merge pull request #12 from mandaris/master

This is my first pull request in a loooong time.
Alternative Vim cheat sheet
Merge branch 'master' of github.com:ttscoff/cheaters

* 'master' of github.com:ttscoff/cheaters:
  Added definitions to MMD cheat sheet
  Adding the restructuredText cheatsheet.
  Add regex cheat sheet from Patterns App
  Replaced image based TowerGit with HTML version
  Added a cheat sheet for Trickster.
updating tmux
Quick test to see if checkboxes work, revert this.
Merge branch 'master' of github.com:ttscoff/cheaters

* 'master' of github.com:ttscoff/cheaters:
  Quick test to see if checkboxes work, revert this.
removing test
add police scanner codes
reformat scannercodes
fixed the breaking space in the code column
Merge pull request #13 from rpunt/master

Added Police/Fire scanner codes
Added current keyboard shortcuts to emmet cheatsheet
Emmet kbd -> code tags, style tweak
Cheaters update, persistent options, quick search

Contrast settings and active sheet are now stored across sessions.

Typing "g" will open an input for quick, fuzzy jumping between sheets, and if the query starts with "?" it will be treated as a search. "?so query" searches Stack Overflow, "?go" Google, "?gh" Github and anything else, DuckDuckGo (bang searches work).

Signed-off-by: Brett Terpstra <me@brettterpstra.com>
updating demo page
jQuery 1.9 cheatsheet, overall style tweaks
updating demo
Keyboard shortcuts and readme update

j/k navigation, gg/G scrolling, period and comma jump headers, changed
jump shortcut to "t"
Fix for capitalized table headers in tbody rows