Add templates and update gitignore

.gitignore

@@ -1,4 +1,2 @@
-*.pdf
-*.html
 .tox
 build

source/_templates/atom.html

@@ -0,0 +1,5 @@
+<br />
+<a class='atom' href="{{ blog_baseurl }}/blog/atom.xml">
+  <img src="/_static/rss-icon.svg" />
+</a>
+<br />

source/_templates/footer.html

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+{# footer.html #}
+<footer class="t-foot">
+    {% trans path=pathto('copyright'), copyright=copyright|e %}
+    <a href="https://creativecommons.org/publicdomain/mark/1.0/">
+      <span class="cc0">&copy;</span>
+    </a>
+    <a href="{{ path }}">{{ copyright }}</a> .
+    {% endtrans %}
+    <br>
+    A customized
+    <a href="https://typlog.com/">typlog</a>
+    <a href="https://github.com/typlog/sphinx-typlog-theme">sphinx theme</a>.
+</footer>

source/_templates/layout.html

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+{# layout.html #}
+{% extends "!layout.html" %}
+
+{% set css_files = css_files + ['_static/pygments.css'] %}