* #280 can now add response headers inc trace id, now need to consolidate the header place holder stuff
* #280 changed port for linux tests
* #280 lots of hacking around to handle errors and consolidate placeholders into one class
* failing test
* failing test but needs real butterfly server running..need to fix that...also worked out ive broken tracing...yey
* brought in butterfly source code so i can work out how to write acceptance tests for this...
* fixed the bug but still need to fix tracing
* tracing working again across services but need to make tracing hook into new Ocelot middleware as it still uses asp.net middleware
* removed butterfly libs brought in for testing