wai-routing-0.12.2: README.md

[![Build Status](https://travis-ci.org/twittner/wai-routing.svg?branch=develop)][1]

wai-routing enables the declaration of "routes" which handle
requests to a specific URL.

The set of possible handlers can be restricted by "predicates",
which operate on WAI requests and have to be true or else the
handler will not be called.

[1]: https://travis-ci.org/twittner/wai-routing