Update to RSpec 2.99.
Fix this method to return a boolean.
Convert specs to the latest RSpec syntax with Transpec

This conversion is done by Transpec 1.3.1 with the following command:
    transpec -m --keep stub -b true,false

* 46 conversions
    from: be_true
      to: be true

* 34 conversions
    from: be_false
      to: be false

* 4 conversions
    from: expect(collection).to have(n).items
      to: expect(collection.size).to eq(n)

* 4 conversions
    from: its(:attr) { }
      to: describe 'attr' do subject { super().attr }; it { } end

* 3 conversions
    from: expect(obj).to have(n).previously_recorded_interactions
      to: expect(obj.send(:previously_recorded_interactions).size).to eq(n)
These predicates return truthy, not boolean values.
Fix another RSpec warning.
Update to RSpec 3.

Fuubar RSpec dependency is pinned to RSpec 2.x,
so we can't install it yet.
Merge pull request #361 from vcr/update-rspec

Update rspec