tweaks
Squashed commit of the following:

commit 827396261471d151b00a6fdf585beb7be8c29c00
Author: Chris Redinger <redinger@gmail.com>
Date:   Tue Oct 28 15:55:41 2014 -0400

    Use datomic-free

commit 0291363db3bdefac22b983ade0d99d4795ca10b0
Author: Chris Redinger <redinger@gmail.com>
Date:   Mon Oct 27 23:26:25 2014 -0400

    Update Datomic dependency to 5052

commit 31c97e0604e3bde7bb86876cc21f9f2d5b16be83
Author: Stuart Halloway <stu@cognitect.com>
Date:   Sat Oct 25 23:11:31 2014 -0400

    finish pull examples

commit a735b78771c2e326d0569b9481b676d8d5f12b13
Author: Stuart Halloway <stu@cognitect.com>
Date:   Sat Oct 25 22:03:14 2014 -0400

    pull release update wip