Update redcarper gem

Gemfile

@@ -82,7 +82,7 @@ gem "seed-fu"
 gem "github-markup"
 
 # Required markup gems by github-markdown
-gem 'redcarpet', '~> 2.2.2'
+gem 'redcarpet', '~> 3.1.2'
 gem 'RedCloth'
 gem 'rdoc', '~>3.6'
 gem 'org-ruby'

Gemfile.lock

@@ -391,7 +391,7 @@ GEM
       ffi (>= 0.5.0)
     rdoc (3.12.2)
       json (~> 1.4)
-    redcarpet (2.2.2)
+    redcarpet (3.1.2)
     redis (3.0.6)
     redis-actionpack (4.0.0)
       actionpack (~> 4)
@@ -657,7 +657,7 @@ DEPENDENCIES
   rb-fsevent
   rb-inotify
   rdoc (~> 3.6)
-  redcarpet (~> 2.2.2)
+  redcarpet (~> 3.1.2)
   redis-rails
   request_store
   rspec-rails