Create Resource model. Add seeds.

* Note that using Model.create on seeds.rb can be dangerous if you don't think about mass-assignment. See my comment in seeds.rb for more.
Install simple_form gem
Make a pretty bootstrapped Add Resource form on resources#index.

* Add Resource validations, so simple_form_for shows required fields.
Clean up whitespace/comments
Show all resources.
Merge branch 'master' into resources

Conflicts:
	app/assets/stylesheets/base.css.scss
Implement resources#create.
Merge branch 'master' into resources