Constructor DI/IoC all the things!

• BREAKING CHANGE: Constructors have been refactored to accept only one main argument type. Makes it easier to discover the api.
• Can now test to see how many times the expected endpoint was 'hit' with a new NumberOfTimesCalled property on the HttpMessageOptions class.

Removed Factory and internal caching/wildcard improvements

• Breaking Change: removing the Factory as it felt like it was just being a Service Locator (which isn't good, in this scenario).
• Some internal caching improvements and wildcard improvement support.

Querystring bugfix

• Fixed a bug when the url to test has a querystring value.

Adding HttpMessageOptions

New HttpMessageOptions class so we can now also test for the HttpMethod (GET/POST, etc).