Move Usage info up, restructure titles, py3 info
Move Usage info up, restructure titles, py3 info

commit 15cbc1a66482942345bb9a416e35f9932d803416
Author: Jason Carver <ut96caarrs@snkmail.com>
Date:   Tue Jul 25 10:04:34 2017 -0700

    details link

commit af9a0bb60dc17b00c7d53a253be79fdfa38e3853
Author: Jason Carver <ut96caarrs@snkmail.com>
Date:   Tue Jul 25 10:02:21 2017 -0700

    move setup details later

commit e2df3c9ecec9f82666aa8c8b0a281ba7af89632a
Author: Jason Carver <ut96caarrs@snkmail.com>
Date:   Tue Jul 25 09:56:35 2017 -0700

    restructure titles, and add python 3 setup

carver/ens.py,carver/ens.py