[Container-tools] Updated ADB Documentation

[Brian (bex) Exelbierd]

Hi All,

The documentation in the ADB has received some patch love in the last 
few days.  Please take a look and raise issues for improvements.

https://github.com/projectatomic/adb-atomic-developer-bundle - README
https://github.com/projectatomic/adb-atomic-developer-bundle/tree/master/docs

Your feedback is greatly appreciated.

regards,

bex