Adds CONTRIBUTORS file
handle the case of missing billingitem in subnet cancel
changing error raised
changing error raised
changing error raised
pep8 happy
pep8 happy
Merge pull request #390 from Neetuj/issue389again

handle the case of missing billingitem in subnet cancel
Fix doc error
Merge pull request #392 from underscorephil/391

Fix doc error
Adds more details to image commands
Makes disk space an int
Small cleanup. Adds creation date
Adds image status to image detail command
Sorts datacenter list in image detail by name
Merge pull request #394 from sudorandom/images

Adds more details to image commands
Merge pull request #388 from sudorandom/CONTRIBUTORS

Adds CONTRIBUTORS file
Merge pull request #385 from sudorandom/ci-fixes

Reduces Test Verbosity
Makes Authentication More Flexible