Convert specs to RSpec 2.99.2 syntax with Transpec

This conversion is done by Transpec 2.3.7 with the following command:
    transpec -f -t

* 46 conversions
    from: obj.should
      to: expect(obj).to

* 15 conversions
    from: == expected
      to: eq(expected)

* 7 conversions
    from: obj.stub(:message)
      to: allow(obj).to receive(:message)

* 4 conversions
    from: Klass.any_instance.stub(:message)
      to: allow_any_instance_of(Klass).to receive(:message)

* 4 conversions
    from: obj.should_not
      to: expect(obj).not_to

* 1 conversion
    from: Klass.any_instance.should_not_receive(:message)
      to: expect_any_instance_of(Klass).not_to receive(:message)

* 1 conversion
    from: Klass.any_instance.should_receive(:message)
      to: expect_any_instance_of(Klass).to receive(:message)

* 1 conversion
    from: be_true
      to: be_truthy

* 1 addition
      of: RSpec.configure { |c| c.infer_spec_type_from_file_location! }

For more details: https://github.com/yujinakayama/transpec#supported-conversions
Remove rspec-fire
Upgrade to RSpec 3
spec_helper -> rails_helper
Fix spec
Tick to RSpec 3.1
Merge pull request #3 from mlarraz/rspec3

Upgrade to RSpec 3