Fix lgtm checks and use pull request body for merge message

Closes #33

LGTM given by: @nhance

Squashed commit of the following:

commit c169515f7057b11dff84f77a795bcf10b51a36dd
Author: Valentino <valentino@reenhanced.com>
Date:   Mon Mar 4 09:52:12 2013 -0500

    Bumbed version for gem updates

commit 7ff11b39dc9de4a86402122100482b347231d32a
Author: Valentino <valentino@reenhanced.com>
Date:   Mon Mar 4 09:50:54 2013 -0500

    Use pull request body OR last commit message

commit 75687f55a1473f169f870a3c30b2dce8933e2428
Author: Valentino <valentino@reenhanced.com>
Date:   Wed Dec 26 10:06:00 2012 -0500

    [fix] lgtm checks are buggy

commit 124b1e590c1fef44174315c5d01e45ee5586efe5
Author: Valentino <valentino@reenhanced.com>
Date:   Thu Dec 6 15:43:19 2012 -0500

    Ensure comment author lookup is unique