Adding support for banner files.
Adding support for ssh encryption ciphers.
Add client alive support to sshd_config
Restore default banner functionality
Merge branch 'actionjack-restore-default-banner'

* actionjack-restore-default-banner:
  Restore default banner functionality
  Add client alive support to sshd_config
  Adding support for ssh encryption ciphers.
  Adding support for banner files.
closes #17 adding banner, cypher, keep alive