Moved vars to template file
Remove default passwords from all.template
Ignore group_vars/all file
Change placeholder in all.template
Vagrantfile checks for of group_vars/all file
Vagrantfile checks for dryad.db.password
Update README for required customizations
Vagrantfile checks for repo address
Update README to match all.template
Merge pull request #13 from datadryad/remove-sensitive-info

Remove sensitive info from group_vars/all