(refactor) Strip lifetime from handler.
(refactor) Coerce req/res (does not compile).
(refactor) Coerce Response lifetimes.
(refactor) Refactored conversion from rust-http into its own trait.
(refactor) Required new trait for Server impls.
(refactor) Removed all unnecessary lifetimes.
Merge pull request #30 from iron/refactor/response-lifetime

Solved the Great Response Crisis of Week 8