fix api doc url
Merge pull request #13 from isocket/api-ref

fix api doc url
multiple urls for product groups
Merge pull request #14 from isocket/inventory-final

multiple urls for product groups
update example
Merge branch 'master' of github.com:isocket/developers-portal

* 'master' of github.com:isocket/developers-portal:
  multiple urls for product groups
fix targeting url fixes item:2141
merge master