[wip] proxied ssh
[fix] add sftp to connection wrapper
[fix] change state when end is called
[fix] add support for passphrase option when a privateKey is used
[fix] typos
[fix] support passphrase in conection abstraction as well
[fix] allow options to be passed in for continuous connections
[doc] add little section for using options
Merge pull request #11 from mikeal/proxy-ssh

Proxy ssh