Merge pull request #124 from GregSutcliffe/gh-pages

Make smart-proxy scenarios more consistent with the descriptions
Add host group imaging deep dive
Add Rails console instructions
Add note on foreman-rake on source installs
Change header menu API to dropdown menu to include v1 and v2
Copy apipie generate docs from public/apipie-cache to api/
Edit hrefs in apipie generate docs. Add .html to path