Add Floating Action Bar library to project

I have a project, and for some reason, when I try and include this floating action bar library: [login to view URL] It doesn't work, gives an error. Don't know how to fix it. I will send you my project. You must delete the project once the job is done. All you have to do is add the dependency, fix whatever the error is, of course make sure it works, and send the project back to me.