Merge pull request #11 from univate/master

AddInterestGrouping missing parameter information
Merge pull request #12 from univate/master

Incorrect uri for GetListWebHooks
Update change log
GetListMergeVars takes id param as an array.
Merge pull request #13 from univate/patch-1

GetListMergeVars takes id param as an array.
Prepare release
Fix async
Merge pull request #16 from zf-fr/fix-async

Fix async
Add missing report methods.