upgrade to rdoc 3.6.1

lib/github/markup/rdoc.rb

@@ -1,5 +1,4 @@
-require 'rdoc/generators/html_generator'
-require 'ostruct'
+require "rdoc/markup/to_html"
 
 module GitHub
   module Markup
@@ -9,11 +8,8 @@ def initialize(content)
       end
 
       def to_html
-        simple_markup = SM::SimpleMarkup.new
-        generator = Generators::HyperlinkHtml.new('', OpenStruct.new)
-        simple_markup.add_special(/((link:|https?:|mailto:|ftp:|www\.)\S+\w)/, :HYPERLINK)
-        simple_markup.add_special(/(((\{.*?\})|\b\S+?)\[\S+?\.\S+?\])/, :TIDYLINK)
-        simple_markup.convert(@content, generator)
+        h = ::RDoc::Markup::ToHtml.new
+        h.convert(@content)
       end
     end
   end

test/markups/README.rdoc.html

@@ -1,16 +1,11 @@
-<ul>
-<li>One
+<ul><li>
+<p>One</p>
+</li><li>
+<p>Two</p>
+</li></ul>
 
-</li>
-<li>Two
+<p>This is an <a href="http://github.com">absolute link</a>.  So is this: <a
+href="http://github.com">github.com</a></p>
 
-</li>
-</ul>
-<p>
-This is an <a href="http://github.com">absolute link</a>. So is this: <a
-href="http://github.com">github.com</a>
-</p>
-<p>
-This is a <a href="rawr.html">relative link</a>. So is this: <a
-href="rawr.html">rawr.html</a>
-</p>
+<p>This is a <a href="rawr.html">relative link</a>.  So is this: <a
+href="rawr.html">rawr.html</a></p>