REXML is dead. Long live Nokogiri.

Modify Maruku to use Nokogiri instead of REXML.
Produces a 3-fold speedup in the #to_html method.

vendor/plugins/maruku/spec/block_docs/inline_html.md

@@ -0,0 +1,140 @@
+Write a comment abouth the test here.
+*** Parameters: ***
+{:css=>"style.css"}
+*** Markdown input: ***
+CSS: style.css
+
+Input:
+
+	<em>Emphasis</em>
+
+Result: <em>Emphasis</em>
+
+Input:
+
+	<img src="http://jigsaw.w3.org/css-validator/images/vcss"/>
+
+Result on span: <img src="http://jigsaw.w3.org/css-validator/images/vcss"/>
+
+Result alone: 
+
+<img src="http://jigsaw.w3.org/css-validator/images/vcss"/>
+
+Without closing:
+
+<img src="http://jigsaw.w3.org/css-validator/images/vcss">
+
+<div markdown="1">
+	This is *true* markdown text (paragraph)
+
+	<p markdown="1">
+		This is *true* markdown text (no paragraph)
+	</p>
+	<p markdown="block">
+		This is *true* markdown text (block paragraph)
+	</p>
+</div>
+
+<table>
+<tr>
+<td markdown="1">This is a *true* markdown text. (no par)</td>
+<td markdown="block">This is *true* markdown text. (par)</td>
+</tr>
+</table>
+
+
+
+*** Output of inspect ***
+md_el(:document,[
+	md_par(["Input:"]),
+	md_el(:code,[],{:raw_code=>"<em>Emphasis</em>"},[]),
+	md_par(["Result: ", md_html("<em>Emphasis</em>")]),
+	md_par(["Input:"]),
+	md_el(:code,[],{:raw_code=>"<img src=\"http://jigsaw.w3.org/css-validator/images/vcss\"/>"},[]),
+	md_par([
+		"Result on span: ",
+		md_html("<img src=\"http://jigsaw.w3.org/css-validator/images/vcss\" />")
+	]),
+	md_par(["Result alone:"]),
+	md_html("<img src=\"http://jigsaw.w3.org/css-validator/images/vcss\" />"),
+	md_par(["Without closing:"]),
+	md_html("<img src=\"http://jigsaw.w3.org/css-validator/images/vcss\" />"),
+	md_html("<div markdown=\"1\">\n\tThis is *true* markdown text (paragraph)\n\n\t<p markdown=\"1\">\n\t\tThis is *true* markdown text (no paragraph)\n\t</p>\n\t<p markdown=\"block\">\n\t\tThis is *true* markdown text (block paragraph)\n\t</p>\n</div>"),
+	md_html("<table>\n<tr>\n<td markdown=\"1\">This is a *true* markdown text. (no par)</td>\n<td markdown=\"block\">This is *true* markdown text. (par)</td>\n</tr>\n</table>")
+],{},[])
+*** Output of to_html ***
+<p>Input:</p>
+
+<pre><code>&lt;em&gt;Emphasis&lt;/em&gt;</code></pre>
+
+<p>Result: <em>Emphasis</em></p>
+
+<p>Input:</p>
+
+<pre><code>&lt;img src="http://jigsaw.w3.org/css-validator/images/vcss"/&gt;</code></pre>
+
+<p>Result on span: <img src="http://jigsaw.w3.org/css-validator/images/vcss"/></p>
+
+<p>Result alone:</p>
+<img src="http://jigsaw.w3.org/css-validator/images/vcss"/>
+<p>Without closing:</p>
+<img src="http://jigsaw.w3.org/css-validator/images/vcss" /><div>
+<p>
+<p>This is</p>
+<em>
+<p>true</p>
+</em>
+<p>markdown text (paragraph)</p>
+</p>
+<p>
+<p>
+<p>This is</p>
+<em>
+<p>true</p>
+</em>
+<p>markdown text (no paragraph)</p>
+</p>
+</p>
+	<p>
+<p>
+<p>This is</p>
+<em>
+<p>true</p>
+</em>
+<p>markdown text (block paragraph)</p>
+</p>
+</p>
+</div><table>
+<tr>
+<td><p>This is a</p><em><p>true</p></em><p>markdown text. (no par)</p></td>
+<td><p>This is</p><em><p>true</p></em><p>markdown text. (par)</p></td>
+</tr>
+</table>
+*** Output of to_latex ***
+Input:
+
+\begin{verbatim}<em>Emphasis</em>\end{verbatim}
+Result: 
+
+Input:
+
+\begin{verbatim}<img src="http://jigsaw.w3.org/css-validator/images/vcss"/>\end{verbatim}
+Result on span: 
+
+Result alone:
+
+Without closing:
+*** Output of to_md ***
+Input:
+
+Result:
+
+Input:
+
+Result on span:
+
+Result alone:
+
+Without closing:
+*** Output of to_s ***
+Input:Result: Input:Result on span: Result alone:Without closing: