WIP- upgrading to rspec 3
Convert specs to RSpec 3.1.5 syntax with Transpec

This conversion is done by Transpec 2.3.7 with the following command:
    transpec test

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

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

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

* 14 conversions
    from: lambda { }.should
      to: expect { }.to

* 8 conversions
    from: > expected
      to: be > expected

* 3 conversions
    from: obj.stub(:message => value)
      to: allow(obj).to receive_messages(:message => value)

* 2 conversions
    from: obj.should_receive(:message)
      to: expect(obj).to receive(:message)

* 1 conversion
    from: obj.should_not_receive(:message)
      to: expect(obj).not_to receive(:message)

For more details: https://github.com/yujinakayama/transpec#supported-conversions
specify exact versions of development dependency gems
remove unused cucumber files
update tests to use spec/ folder and spec_helper file naming
load config files from new location using helper methods
Merge pull request #47 from RallyTools/update_rspec_spike-rkd

Update test suite