update FedEx API endpoints
Bump RSpec to 2.99.0
Convert specs to RSpec 2.99.1 syntax with Transpec

This conversion is done by Transpec 2.3.6 with the following command:
    transpec

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

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

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

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

* 1 conversion
    from: >= expected
      to: be >= expected

* 1 conversion
    from: be_false
      to: be_falsey

* 1 conversion
    from: be_true
      to: be_truthy

For more details: https://github.com/yujinakayama/transpec#supported-conversions
Bump RSpec to 3.0.0

And remove c.treat_symbols_as_metadata_keys_with_true_values = true as
it is deprecated and is now the default functionality in RSpec 3.
Disable RSpec 'should' syntax

The following blog post by Myron Marston explains why the expect syntax
is preferable:

http://myronmars.to/n/dev-blog/2012/06/rspecs-new-expectation-syntax
Merge branch 'fedex_api_endpoints' of https://github.com/Vermonster/fedex into Vermonster-fedex_api_endpoints
Merge branch 'Vermonster-fedex_api_endpoints'
Merge branch 'rspec-3-upgrade' of https://github.com/alex-tan/fedex into alex-tan-rspec-3-upgrade
Merge branch 'alex-tan-rspec-3-upgrade'
Update Readme.md

fix #validate_address documentation
Add support for GroundCloseRequest
readme :mps param explained
Merge pull request #79 from kdavh-trr/master

Update Readme.md
Merge pull request #83 from piotrimbierowicz/master

readme :mps param explained
Merge branch 'ground-close' of https://github.com/cyu/fedex into cyu-ground-close
Bump version
Merge branch 'cyu-ground-close'
Merge remote-tracking branch 'original/master'