Adds comments to sample modules.
Updates key chord bindings.
Merge pull request #457 from climatewarrior/updateKeyChords

Updates key chord bindings.
Merge pull request #456 from climatewarrior/add-module-docs

Adds comments to sample modules.
Enable browse-kill-ring's default keybindings
Merge branch 'master' of https://github.com/bbatsov/prelude
Make cider start up with some nicer defaults.
Improve prelude-eval-and-replace
Merge branch 'master' of https://github.com/bbatsov/prelude
Don't use C-x SPC as it's used in Emacs 24.4 by default for rectangular selection
Merge branch 'master' of https://github.com/bbatsov/prelude
Turn the special buffers back on.
Add bug tracking tags.
Add using marked as the markdown previewer.