Feature: Add capybara and install instructions

Squashed commit of the following:

commit b34a43649486b1f7e5f0a4b852c2ae4808dd0d02
Author: David Snyder <david@infochimps.com>
Date:   Thu Apr 24 16:46:20 2014 -0500

    Add capybara and install instructions

    Change-Id: Ib2153e916811194e95b5c0668d1d728322c588de

Change-Id: I1e4c7fd1a4fafd0d7bccc4fff7bd3f49682bcb43