added call to update ad groups
Merge pull request #14 from GallopLabs/feature/update-ad-groups

update_adgroup functionality
Merge pull request #8 from GallopLabs/field-support-for-multiple-adgroup-get

Add field selection support for getting adgroups for a given adaccount or for a given adcampaign.
Bump up the version.
Merge branch 'master' of https://github.com/galloplabs/facebook-ads-api