[cloudsigma] Add CloudSigma compute provider
[cloudsigma] Fix create request not expecting status 201
[cloudsigma] Make api location as an option (:cloudsigma_host)
[cloudsigma] Fix excon HTTPStatusError#response not having []= and failing on assignment of json decoded body
Merge pull request #1593 from cloudsigma/master

Added provider for CloudSigma