Merge pull request #1 from onthoo/master

Extra "accounts" and "ds" services
Updated the available methods to Gigya's current offering.
Updated the how requests are created to include a 'datacenter' parameter (defaulting to 'us1') to ensure that API calls are properly rate-limited.
Updated README file to Github's modern standards
Merge pull request #3 from chronosis/master

Updated the available methods to Gigya's current offering.
Merge branch 'master-jproulx'