Add atom feed.

lib/bamboo.rb

@@ -33,6 +33,10 @@ def index(coll, name)
     halt 307, {'Location' => 'http://github.com/mikedouglas'}, ''
   end
 
+  get '/feed' do
+    Template.new('atom.xml').render({'posts' => @posts, 'site' => @site})
+  end
+
   get '/posts' do
     index @posts, 'posts'
   end

templates/atom.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0"?>
+<feed xmlns="http://www.w3.org/2005/Atom">
+  <title>entropy.io</title>
+  <link href="{{ site.url }}" />
+  <link type="application/atom+xml" rel="self" href="http://entropy.io/atom.xml" />
+  <updated>{{ site.time | date_to_xmlschema }}</updated>
+  <id>{{ site.url }}</id>
+  <author>
+    <name>{{ site.author }}</name>
+    <email>{{ site.email }}</email>
+  </author>
+
+  {% for post in site.posts %}
+  <entry>
+    <id>{{ site.url }}{{ post.url }}</id>
+    <link type="text/html" rel="alternative" href="{{ site.url }}{{ post.url }}" />
+    <title>{{ post.title }}</title>
+    <updated>{{ post.date | date_to_xmlschema }}</updated>
+    <author>
+      <name>{{ site.author }}</name>
+      <uri>{{ site.url }}</uri>
+    </author>
+    <content type="html">{{ post.content | xml_escape }}</content>
+  </entry>
+  {% endfor %}
+</feed>