improving markup to be clearer (no changes to numbering or substance of guide)
Corrects styling for alert

In the guides for adding Devise, the alert classes were incorrectly
labeled as “alert-notice” and “alert-error.” This changes them to the
correct names so that the styling shows up. See
http://getbootstrap.com/components/#alerts for details.
Merge pull request #167 from lclindeman/correct-styling-for-alert

Corrects styling for alert
Update 2013-05-02-install.markdown

Ubuntu users come across this problem a lot.
Fix typo in guide post links
update app guide with JS related tip
Add rbenv-gem-rehash to the install guide

We ran into problems when trying to verify the installation of the rails
stack via a simple `rails new railsgirls` since rbenv does not automatically
add shims for newly installed gems. The rbenv-gem-rehash plugin add this
behavior an fixes the problem.
Merge pull request #169 from skippednote/master

Fix typo in guide post links
Merge pull request #171 from croaker/master

Add rbenv-gem-rehash to the install guide
Merge pull request #170 from FloorD/master

update app guide with JS related tip
update followup guides list
Merge pull request #172 from FloorD/master

update followup guides list
add rake db:migrate after scaffold

Simple instructions explaining that rake db:migrate should be ran after the rails g scaffold command so that the database knows about the new comments table
Merge pull request #173 from xanhast/master

On the commenting guide, add rake db:migrate after scaffold
Merge pull request #166 from digitalnatives/master

alternative installment - virtual machine chapter
upgrade github-pages-18
fixing image paths in virtual image post
referencing virtual image as an alternative installment in install doc