Use Bundler for dependency management

.gitignore

@@ -1,4 +1,5 @@
 site
+.bundle
 .DS_Store
 .rvmrc
 .sass-cache

Gemfile

@@ -0,0 +1,10 @@
+source "http://rubygems.org"
+source "http://gems.github.com"
+
+gem 'activesupport', "2.3.2"
+gem 'henrik-jekyll'
+gem 'compass'
+gem 'compass-colors'
+gem 'rdiscount'
+gem 'fssm'
+gem 'serve'

Rakefile

@@ -1,4 +1,7 @@
-require 'active_support'
+require "rubygems"
+require "bundler"
+Bundler.setup
+
 require 'source/_helpers'
 
 site_url    = "http://yoursite.com"   # deployed site url for sitemap.xml generator