Backbone 1.2.0 compatibility

[Integral]

Hello!

It seems that new version of Backbone breaks backbone-forms. At least bootstrap3.js template know nothing about Form variable.

[whitmanc]

@Integral You can fix it by replacing Form. with Backbone.Form. it seems

[glenpike]

Closing this issue as it's been answered - see the example: https://github.com/powmedia/backbone-forms/blob/master/examples/register-form-custom-template/main.js#L3