diff --git a/Rakefile b/Rakefile
index f0f88ec..d6a2080 100644
--- a/Rakefile
+++ b/Rakefile
@@ -11,6 +11,7 @@ task :test do
   sh "bundle exec jekyll build --trace"
   Rake::Task["spec"].invoke
   HTML::Proofer.new("./_site", :check_html => true,
+                    :validation => { :ignore_script_embeds => true },
                     :href_swap => { %r{http://choosealicense.com} => "" }).run
 end
 
diff --git a/_config.yml b/_config.yml
index e96f3da..a6d14c1 100644
--- a/_config.yml
+++ b/_config.yml
@@ -41,6 +41,7 @@ gems:
   - jekyll-sitemap
   - jekyll-redirect-from
   - jekyll-seo-tag
+  - jekyll-coffeescript
 
 sass:
     sass_dir: _sass