Add vagrantbox for osf-staging
Add deploy.yml playbook (incomplete)
Add groupvars for osf-staging
Always install both emacs and vim
Update deploy script and add corresponding invoke task

Github auth is only working with username and password ATM. Will
try to get it working using SSH keys
Add uwsgi.conf file
Add ansible.cfg

Agent forwarding necessary for git module to work
Fix deploy script

Accessing github with SSH keys working.
Prompt for branch to check out on staging; add convenience tasks
Merge pull request #35 from CenterForOpenScience/osf

OSF