install rdiscount

Gemfile

@@ -19,6 +19,7 @@ gem "pygments.rb", "0.2.3"
 gem "thin"
 gem "git"
 gem "acts_as_list"
+gem 'rdiscount'
 group :assets do
   gem 'sass-rails', "  ~> 3.1.0"
@@ -26,7 +27,7 @@ group :assets do
   gem 'uglifier'
 end
-group :development do 
+group :development do
   gem 'rails-footnotes', '>= 3.7.5.rc4'
   gem 'annotate', :git => 'git://github.com/ctran/annotate_models.git'
 end

Gemfile.lock

@@ -161,6 +161,7 @@ GEM
       rdoc (~> 3.4)
       thor (~> 0.14.6)
     rake (0.9.2)
+    rdiscount (1.6.8)
     rdoc (3.9.4)
     rspec (2.6.0)
       rspec-core (~> 2.6.0)
@@ -264,6 +265,7 @@ DEPENDENCIES
   pygments.rb (= 0.2.3)
   rails (= 3.1.0)
   rails-footnotes (>= 3.7.5.rc4)
+  rdiscount
   rspec-rails
   ruby-debug19
   sass-rails (~> 3.1.0)