title: How Do You Install Missing sass-rails gem?
body: <p>Hi new to stackoverflow and Ruby on Rails in general. I'm following the Kevin Skoglund Ruby on Rails 3 Essential Training online tutorial and I'm having trouble starting out. I'm trying to boot WEBrick but each time I try I get this error:</p>
  
  <p>C:\Users\Matt\Documents\Sites\simple_cms>rails server
  Could not find gem 'sass-rails (~> 5.0) x86-mingw32' in any of the gem sources l
  isted in your Gemfile or installed on this machine.
  Run <code>bundle install</code> to install missing gems.</p>
  
  <p>What do I do to install this missing sass-rails gem, so I can boot WEBrick?</p>