Merge pull request #2 from admhlt/patch-1

Options symbols seem to need to be uppercase

Author: pathawks

lib/jekyll-commonmark.rb

@@ -7,9 +7,9 @@ class Markdown::CommonMark
       def initialize(config)
         Jekyll::External.require_with_graceful_fail "commonmarker"
         begin
-          @options = config['commonmark']['options'].collect { |e| e.to_sym }
+          @options = config['commonmark']['options'].collect { |e| e.upcase.to_sym }
         rescue NoMethodError
-          @options = [:default]
+          @options = [:DEFAULT]
         else
           @options.reject! do |e|
             unless CommonMarker::Config::Parse.keys.include? e.to_sym