At the $25 level, you'll be noted on the website and get early access to all the behind the scenes footage, as well as early access to the completed film, way before the public June 2015 release.
For your generous $100 contribution, you'll get your name in the end credits as a producer. And you'll still get early access to all the behind the scenes footage and the final film, and a mention on the website.
Act now, there are very few of these perks available. You'll get your name at the START of the film as an associate producer. How awesome is that? And, of course, all the early access and website mention as well.