[Plugin: Gravity Forms – Placeholders add-on] Please add more info on how to use in wordpress plugin

Thanks for the great plugin!!
At first time, I almost pass this plugin, because its info is too less to know how it works.
Pleas add more info and some screenshot would be great
you got 5 star from me 🙂

http://wordpress.org/extend/plugins/gravity-forms-placeholders/