The bcrypt-ruby gem has changed its name to just bcrypt

Instead of installing `bcrypt-ruby`, you should install `bcrypt`.
update rspec to 2.99 rc1
change order of comment
Convert specs to RSpec 2.99.0.rc1 syntax with Transpec

This conversion is done by Transpec 2.0.0 with the following command:
    transpec

* 25 conversions
    from: describe 'some model' { }
      to: describe 'some model', :type => :model { }

* 16 conversions
    from: be_true
      to: be_truthy

* 7 conversions
    from: be_false
      to: be_falsey

* 2 conversions
    from: describe 'some controller' { }
      to: describe 'some controller', :type => :controller { }

* 1 conversion
    from: expect(collection).to have(n).items
      to: expect(collection.size).to eq(n)
use newer syntax
add confg to fix infer type deprecation
update rspec to 3.0.0 rc1