photonstorm/phaser — pull request #1353 by pnstickne (2014-11-22 09:32:31+00:00)
Title: Group - 'iterate' documentation and guard

Update iterate documentation to cover usage of `args` and added a guard so
that the callback can be used without requiring that `args` is specified.

Ref. https://github.com/photonstorm/phaser/issues/1352