Some fixes for you

Fixed some formatting (indentation) issues on some files. Also got the user creation working. Look through what changed. 

I saw simple_form in your gemfile so I changed the form_for to simple_form_for which then gives you an entirely separate (better) set of form helpers to use. See here: https://github.com/plataformatec/simple_form

I also set up a .rvmrc to auto-load the version of ruby and a gemset for you when you change into the root of the project at the command line.

Also setup a .gitignore file which will selectively ignore shit you don't want in Git. Used this as a basis: https://github.com/github/gitignore/blob/master/Rails.gitignore

Hopefully this helps.