Update FAQ description of robots.txt / noarchive meta policy.
Pull out how-it-works graphic.
Travis, Fabric, Vagrant.
Merge branch 'dev.noarchive_faq' of https://github.com/jcushman/perma into jcushman-dev.noarchive_faq
Merge branch 'dev.perma_flow' of https://github.com/jcushman/perma into jcushman-dev.perma_flow
bug fix: adjusted end comment in template to include the closing div for Bootstrap row
Merge branch 'dev.vagrant2' of https://github.com/jcushman/perma into jcushman-dev.vagrant2

Conflicts:
	perma_web/perma/settings/settings_common.py
Added more robust, dynamic way to get PROJECT_ROOT
added Travis badge to README
moved the Travis biuld status badge down on the README page
added the latest hits