return is useless when script thorws exception
Merge pull request #382 from atans/patch-2

return is useless when script throws exception
Typo fix and update docblock
Merge pull request #383 from atans/patch-3

Typo fix and update docblock
Fixed typo. Fixes #387
Added link to my event manager wiki page
PHP Notice Fix: Removed unneeded variable.
Removed unneeded method (getMessages) from WaitforGroupId
Fixed session_start PHP notice error.
Changed Updated Status text
Very small code format change.
Update whatsapp.php demo/script after recent code changes.

Fixed getting the groups the user belongs to.
Small formatting changes.
Merge with Shiroko Master