Merge pull request #5 from rhabbachi/update_docs

Added Notes about ssh configuration.
- Make the username unique for each deployment, otherwise each deployment in a project breaks the other deployments because the user password is changed each deployment
- Make the username unique for each deployment, otherwise each deployment in a project breaks the other deployments because the user password is changed each deployment
Merge pull request #11 from rhabbachi/update_docs

Added missing dependency to the docs.
- Fix hardcoded username and group
- Fix apache files directory ownership problem
- Improve files directory permissions settings
Merge branch 'master' of https://github.com/willieseabrook/druploy
Fix crach when parsing yml file.
Force symlink when file exists.

re #4 - I want the domain function to be idempotent