Ditch Redcarpet in favor of the already in user Kramdown.

Gemfile

@@ -85,7 +85,6 @@ gem 'feed-normalizer'
 gem 'slack-notifier', '~> 0.5.0'
 gem 'therubyracer', '~> 0.12.1'
 gem 'mqtt'
-gem 'redcarpet', '~> 3.1.1'
 
 group :development do
   gem 'binding_of_caller'

Gemfile.lock

@@ -233,7 +233,6 @@ GEM
       thor (>= 0.18.1, < 2.0)
     raindrops (0.13.0)
     rake (10.3.2)
-    redcarpet (3.1.2)
     ref (1.0.5)
     rest-client (1.6.7)
       mime-types (>= 1.16)
@@ -405,7 +404,6 @@ DEPENDENCIES
   rack
   rails (= 4.1.4)
   rails_12factor
-  redcarpet (~> 3.1.1)
   rr
   rspec (~> 2.99)
   rspec-collection_matchers

app/helpers/markdown_helper.rb

@@ -1,8 +1,7 @@
 module MarkdownHelper
 
   def markdown(text)
-    markdown = Redcarpet::Markdown.new(Redcarpet::Render::HTML)
-    markdown.render(text).html_safe
+    Kramdown::Document.new(text, :auto_ids => false).to_html.html_safe
   end
 
 end