Fix: Add webkit dependencies to iron_cuke cookbook

Squashed commit of the following:

commit 55b238b4b703d094e27c76fd7f9ee1a34c3802ef
Author: David Snyder <david@infochimps.com>
Date:   Thu Apr 24 16:55:13 2014 -0500

    Add webkit dependencies to iron_cuke cookbook

    Change-Id: Ie6ffcfcd0ec5a28aac245e223e914f5e7e61acf2

Change-Id: Ia5d1e7917a6e75460a487ec81f10e3b6ce9c87ba