first pass at image list
updated for the current status of each command
Remove "knife vchs flavor list" since there's no equivalent on vCHS.

There's no basement in the Alamo.
Merge pull request #1 from mattray/image_list

knife vchs Image list
Merge pull request #2 from mattray/no_flavor

Remove "knife vchs flavor list" since there's no equivalent on vCHS.
server list options now match vm list
Adding copyright text
Merge pull request #4 from cheeseplus/add_options

server list options now match vm list