Remove py26 from tox

Sahara does not support Python 2.6 anymore starting Kilo, it's not even
mentionned in the classifiers. Remove the tox target too as it's now
useless.

Change-Id: I4a94bc696f27017ffdfc96ce2f2638d92117beac
changes to quickstart

cleanup/fixed the quick start guide

Change-Id: I99c32013cb1fcd4b08bbdda8ab3968f6ec75e97b
Closes-Bug: #1394860
Merge "changes to quickstart"
Merge "Remove py26 from tox"