Add support for kramdown HTML converter options

http://kramdown.rubyforge.org/converter/html.html#options

  Example: In the _config.yaml,

  markdown: kramdown

  kramdown:
    auto_ids: true

lib/jekyll.rb

@@ -74,6 +74,12 @@ module Jekyll
     },
     'rdiscount'    => {
       'extensions' => []
+    },
+    'kramdown'        => {
+      'auto_ids'      => true,
+      'footnote_nr'   => 1,
+      'entity_output' => 'as_char',
+      'toc_levels'    => '1..6'
     }
   }
 

lib/jekyll/converters/markdown.rb

@@ -79,7 +79,12 @@ module Jekyll
       setup
       case @config['markdown']
         when 'kramdown'
-          Kramdown::Document.new(content).to_html
+          Kramdown::Document.new(content, {
+			  :auto_ids      => @config['kramdown']['auto_ids'],
+			  :footnote_nr   => @config['kramdown']['footnote_nr'],
+			  :entity_output => @config['kramdown']['entity_output'],
+			  :toc_levels    => @config['kramdown']['toc_levels']
+			  }).to_html
         when 'rdiscount'
           RDiscount.new(content, *@rdiscount_extensions).to_html
         when 'maruku'

test/test_kramdown.rb

@@ -0,0 +1,24 @@
+require File.dirname(__FILE__) + '/helper'
+
+class TestKramdown < Test::Unit::TestCase
+
+  context "kramdown" do
+    setup do
+      config = {
+        'markdown' => 'kramdown',
+        'kramdown' => { 'auto_ids'      => false,
+		        'footnote_nr'   => 1,
+			'entity_output' => 'as_char',
+			'toc_levels'    => '1..6'
+	}
+      }
+      @markdown = MarkdownConverter.new config
+    end
+
+    # http://kramdown.rubyforge.org/converter/html.html#options
+    should "pass kramdown options" do
+      assert_equal "<h1>Some Header</h1>", @markdown.convert('# Some Header #').strip
+    end
+
+  end
+end