Remove hardcoded virtualenv
Rename Ansibles-generic-users -> generic-users
Add github role for installing git and adding Github to known_hosts
Start osf role (mostly moves tasks from deploy.yml)
Update deploy.yml to use osf role
Update dotfiles
Fix check for existing virtualenv
osf depends on supervisor
Add group_vars for osf-production
Update README
Add uwsgi as a dependency
Remove unused hosts.example file
lxml depends on apt
Deprecate `invoke vssh` task
Update docs with clone instructions
Merge branch 'osf-role'