Style fix: Replace do…end with {} in expect blocks

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Convert specs to RSpec 2.14.8 syntax with Transpec

This conversion is done by Transpec 1.10.4 with the following command:
    transpec .

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

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

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

* 1 conversion
    from: obj.should_not
      to: expect(obj).not_to

* 1 conversion
    from: Klass.any_instance.stub(:message)
      to: allow_any_instance_of(Klass).to receive(:message)
Add back request accidentally deleted in 7645789b

Signed-off-by: Alex Coles <alex@alexbcoles.com>
Merge pull request #1137 from opf/fix/rspec-expect-syntax-style-fixes

Style fix: Replace do…end with {} in expect blocks