* Supports Params in net/http Handlers with go1.7+

Go 1.7 introduces request-scoped context, providing a place to hang
Params even in net/http standard Handlers attached with Router.Handler
or Router.HandlerFunc.

This provides an alternative implementation of Router.Handler which
attaches the params to the request context. It also includes a bit of
new public API: ParamsKey is the context key used, and
ParamsFromContext uses ParamsKey to get Params from a context.Context.

All of this is guarded by a "go1.7" build tag. With go 1.6 and older
none of the new API is available and Params continue to be thrown away
in Handler/HandlerFunc-attached endpoints.

* WithValue is the 'context' function

* use an un-exported struct{} alias to collision-proof the key

* no longer a const

* update README.md to reflect additional allocations with the stdlib-compatible api

Githubs markdown renderer doesn’t seem to like this syntax

Include goMiddlewareChain

* add link

seems to be broken

Since `net/http` already provides the necessary functionality, this change removes the technical details of parsing RFC 2617 headers.

Fixes #101

Rephrase

Found this tip about serving static files as a comment in a closed issue. I think it is valuable to have it explicitly defined in the README. Thanks.

Fixes #32
- add missing hashmark in an README internal link
- gorest repo was deleted