Initial work on a new reference section.
Added a link to the reference files from the main railsbridge index.
Added a few commands to the cheet sheet.
Added a few commands to the cheet sheet.
Corrected a comment.
Reorganized. Moving the references into the intermediate directory for now. Eventually we need a way to make them common across both the beginner and intermediate left navs. Removed the references index because it was duplicating it's own left nav and looked a mess.
Merge branch 'master' into the-quick-brown-reference-jumps-over-the-lazy-curriculum
modified update to redirect_to topics_path to avoid bug: duplicate flash messages on show page
Edits for 'creating a new controller' page

class => controller
method => action
directory names (/views, /controller) are plural
use 'about' instead of 'new' for second action to avoid confusion
  with standard actions
Merge pull request #258 from Sue-Young/master

modified update to redirect_to topics_path to avoid bug: duplicate flash...
Factor out 'create an ssh key' to be next step for all OSX steps

Previously, it was the last sub-step of these steps, which cluttered the TOC a bit
A couple of minor spacing/casing changes to the Windows page
Move the distracting InstallfestExternalRenderer to separate file

scssify doc_page.css
Capitalize acronyms like OSX and RVM in titles and TOC
Add test for DVD in Titleizer

There wasn't a test for the DVD case in Titleizer. I can't even believe that we made the titleizer uppercase DVD; I had go to back and check that the word DVD shows up in the TOC. Might be nice to make this a shared behavior test at this point though, no? The only thing you'd lose is the silly test strings.

Also, let it be known that @habutai is convinced this test is really dumb because VHS is not capitalized.
Merge pull request #262 from tjarratt/patch-1

Add test for DVD in Titleizer
Use titleizer for 'link', 'next_step' and 'back' links

Remove unused 'todo' method
Update sample controller/view code in suggestotron to look more like Rails 4 scaffolds

"confirm: 'bleep bloop'" is now always "data: { confirm: 'bleep bloop' }"

"render json: @topic" in the create successcase now looks more like
"render action: 'show'"
Obligatory new OSX version commit (mavericks)
Kiwi was removed in step 6, hat tip to Julia Levy and Sarah Kong.