Add test.

On my system rest2html generates quite some different markup
so I'm not sure whether this actually works.

Author: felixfontein

test/markups/README.rst

@@ -8,6 +8,8 @@ Example text.
 
 .. contents:: Table of Contents
 
+.. _label_for_header_2:
+
 Header 2
 --------
 
@@ -17,6 +19,8 @@ Header 2
 
 3. Somé UTF-8°
 
+4. `Link to the above header <label_for_header_2_>`_
+
 The UTF-8 quote character in this table used to cause python to go boom. Now docutils just silently ignores it.
 
 .. csv-table:: Things that are Awesome (on a scale of 1-11)

test/markups/README.rst.html

@@ -9,11 +9,13 @@ <h2>Subtitle</h2>
 </ul>
 </div>
 <a name="header-2"></a>
+<a name="label-for-header-2"></a>
 <h2><a href="#toc-entry-1">Header 2</a></h2>
 <ol>
 <li>Blah blah <code>code</code> blah</li>
 <li>More <code>code</code>, hooray</li>
 <li>Somé UTF-8°</li>
+<li><a href="#label-for-header-2">Link to the above header</a></li>
 </ol>
 <p>The UTF-8 quote character in this table used to cause python to go boom. Now docutils just silently ignores it.</p>
 <table>