Squashed commit of the following:

commit eef84989792e89334ca2ba52cecbd3a6784aba81
Author: njfu <yingjief5312@gmail.com>
Date:   Tue Jul 22 16:56:59 2014 -0500

    six

commit b010877bd8fb244e551d6f9dae64fb51f9efa2d9
Author: njfu <yingjief5312@gmail.com>
Date:   Tue Jul 22 16:38:12 2014 -0500

    four - squashed four and five

    four

    five