Squashed commit of the following:

commit f6d5e3c2dd4bd1280e79133b617bc523574c2ded
Author: Mattt Thompson <m@mattt.me>
Date:   Sat May 17 11:57:53 2014 -0700

    Refactoring network AFNetworkActivityIndicatorManager tests

commit dc9fc2d99615dbb5314627cfafd57138d539e8d2
Author: Dave Weston <dweston@yammer-inc.com>
Date:   Tue Apr 15 12:18:21 2014 -0700

    Add tests around AFNetworkActivityIndicatorManager