Remove leftover debug DumpReqJson from CreateImage
gofmt
Add DeleteImageById
Add acceptance test for CreateImage and DeleteImageById
Merge pull request #82 from markpeek/markpeek-deleteimage

Add DeleteImageById and acceptance test for CreateImage and DeleteImageById
Merge branch 'master' into blog-post-1
Merge branch 'blog-post-1' of https://github.com/rackspace/gophercloud into blog-post-1