Provides for an easier use of SSH by setting up ssh-agent.
This module is disabled on Mac OS X due to custom Apple SSH support rendering it unnecessary.
To load multiple identities, add the following line to zpreztorc:
zstyle ':prezto:module:ssh:load' identities 'id_rsa' 'id_dsa' 'id_github'
The authors of this module should be contacted via the issue tracker.