This is a Lokka plugin to add a calendar.
Run these commands:
$ cd public/plugin
$ git clone git://github.com/nkmrshn/lokka-calendar.git
There is one helper method called "calendar". Please insert to your theme like:
<dt><%= t.calendar %></dt>
<dd>
<ul>
<%= calendar %>
</ul>
</dd>
The CSS, public/plugin/lokka-calendar/views/calendar.css, is designed for "jarvi" theme. Maybe you will be needed to modifiy this CSS file for your theme.