Events+ user registration link to Gravity forms

I am using
Wordpress 3.8.1
Events+ 1.7.1
GravityForms 1.8

Scenario: New user arrives to this page http://chocolatboxboutiq.com/events/2014/01/test-event/

They click on Attending

Currently on click, the user is redirected here: http://chocolatboxboutiq.com/wp-login.php?redirect_to=http%3A%2F%2Fchocolatboxboutiq.com%2Fevents%2F2014%2F01%2Ftest-event%2F&eab=y

My goal is to use a Gravity forms user registration (front end) form http://chocolatboxboutiq.com/register/.

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I did a search earlier and found this answer for membership https://premium.wpmudev.org/forums/topic/membership-registration-with-gravity-forms

I just can't figure out the details for Events+

Looking forward to the answer!