Rename docs/*.md => docs/*.txt

The documentation uses features of Python-Markdown that are not supported on
GitHub and it's better to get a source view of the docs anyway. For example,
that way comments and bug reports can reference a specific line of a file.

Of course, it makes sense for Github to render the README, so that is left
with the `.md` file extension.

1 files changed, 58 insertions, 0 deletions

diff --git a/docs/extensions/tables.txt b/docs/extensions/tables.txt
new file mode 100644
index 0000000..bb0872a
--- /dev/null
+++ b/docs/extensions/tables.txt
@@ -0,0 +1,58 @@
+title:      Table Extension
+prev_title: Footnotes Extension
+prev_url:   footnotes.html
+next_title: Smart Strong Extension
+next_url:   smart_strong.html
+
+Tables
+======
+
+Summary
+-------
+
+The Table Extension adds the ability to create tables in Markdown documents.
+
+This extension is included in the standard Markdown library.
+
+Syntax
+------
+
+Tables are defined using the syntax established in [PHP Markdown Extra][php].
+
+[php]: http://www.michelf.com/projects/php-markdown/extra/#table
+
+Thus, the following text (taken from the above referenced PHP documentation):
+
+    First Header  | Second Header
+    ------------- | -------------
+    Content Cell  | Content Cell
+    Content Cell  | Content Cell
+
+will be rendered as:
+
+    <table>
+      <thead>
+        <tr>
+          <th>First Header</th>
+          <th>Second Header</th>
+        </tr>
+      </thead>
+      <tbody>
+        <tr>
+          <td>Content Cell</td>
+          <td>Content Cell</td>
+        </tr>
+        <tr>
+          <td>Content Cell</td>
+          <td>Content Cell</td>
+        </tr>
+      </tbody>
+    </table>
+
+Usage
+-----
+
+From the Python interpreter:
+
+    >>> html = markdown.markdown(text, ['tables'])
+