(fix) Update for enum changes in rust-url
Merge pull request #231 from cmr/master

(fix) Update for enum changes in rust-url
(refactor) Port Request and Response over to use Hyper.
(refactor) Hook all the pieces together and use Hyper as our http lib.
(chore) Update all examples to check that they connect.
(refactor) Use Hyper instead of rust-http.