two minor rsync bugfixes

1. honor `config.ssh.proxy_command`
2. fix user@host part of the rsync command in case of IPv6
implement multiple networks
update README
fix regression wrt multiple nics

fixes #41
Fix test for config.network and config.networks.

Create server was updated to set config.networks to an empty array, but
other tests were still checking for the existence of config.network or
config.networks, instead of testing if config.networks was empty.
fixes the issue of ssh keys now being represented as an Array in vagrant >= 1.4
Merge pull request #49 from RackerJohnMadrid/fix-rsync-vagrant-1-4

fixes the issue of ssh keys now being represented as an Array in vagrant...
If the .vagrant directory does not contain the machine id, try to connect remotely to try to find it
Fix for delete_server
Missing region while configuring networks
Missing semicolon
add ssl_verify_peer config option
add changelog
update release info
Fix for exception when OS endpoint doesn't have neutron installed
Merge pull request #58 from ohnoimdead/no-network-fix

Fix for exception when OS endpoint doesn't have neutron installed
Merge pull request #56 from nicobrevin/feature-no-verify-peer

add ssl_verify_peer config option
Merge pull request #54 from last-g/patch-1

Missing region while configuring networks
Merge pull request #53 from tjheeta/remote_machine_id

If the .vagrant directory does not contain the machine id, try to connec...
Merge pull request #45 from detiber/fixNetworksPR

Fix test for config.network and config.networks.