Changes

=Manage VMs with docker-machine=

==Introduction==

https://docs.docker.com/machine/overview/

Here is a complete list of the currently available drivers: https://github.com/docker/docker.github.io/blob/master/machine/AVAILABLE_DRIVER_PLUGINS.md

===KVM driver===

*--kvm-cache-mode Sets the caching mode of the kvm machine. Defaults to default.

*--kvm-io-mode-url Sets the disk io mode of the kvm machine. Defaults to threads.