Add KeyPairName to NewServers and gofmt.
Add ResponseWithReauth to do WithReauth that returns a perigee.Response
Add CreateImage that creates a new image from a running server
Add ImageById to provide details on an image id
Change Server/NewServer Metadata from interface{} to map[string]string
Merge pull request #81 from markpeek/markpeek-image

Image changes to support packer.io