added examples, documentation improvement

examples/gallery.md

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+Title: gallery
+Date: 2014-07-13 00:00
+Modified: 2014-07-13
+Slug: gallery-page
+Authors: Scott Boone
+template: siglican_gallery
+
+<!-- This goes in your Pelican input pages directory. -->

examples/siglican_gallery.html

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+<!-- This goes in your Pelican theme directory. -->
+
+{% extends "base.html" %}
+{% block content %}
+<h2>albums</h2>
+<ul>
+{% for aname,album in ALBUMS.iteritems() %}
+<li>{{ aname }}<a href="{{ SITEURL }}/{{ SIGLICAN_DESTINATION }}/{{ album.url }}"><img src="{{ SITEURL }}/{{ SIGLICAN_DESTINATION }}/{{ album.thumbnail }}"></a>
+{% endfor %}
+</ul>
+{% endblock %}