Didn't work for spree 3.0.0

[Pogoss]

Try to use branch 3-0-stable, but can't figure out how to add parts to product.
I checked the created product as can be part, then create another product which will be assembly. After that try to add parts to it, but it's not working. I see only a form with search field, but when I try to enter sku of product nothings happened. Try to enter submit button the same problem.
As I see gem installed without errors, migrations add correctly.

[bsa7]

@Pogoss I'm make a pull-request on this problem: #150