Add code coverage reporting

Nope, thought I'd changed them all, guess I missed one! Thanks!
On Nov 17, 2014 9:08 AM, "Rick Mohr" <notifications@github.com> wrote:

> In README.md:
>
> > @@ -1,4 +1,5 @@
> >  # OpenTreeMap 2 Map Tile Server [![Build Status](https://travis-ci.org/OpenTreeMap/OTM2-tiler.svg?branch=master)](https://travis-ci.org/OpenTreeMap/OTM2-tiler)
> > +[![Coverage Status](https://coveralls.io/repos/maurizi/OTM2-tiler/badge.png?branch=master)](https://coveralls.io/r/OpenTreeMap/OTM2-tiler?branch=master)
>
> Did you mean to use a path with maurizi here?
>
> —
> Reply to this email directly or view it on GitHub
> <https://github.com/OpenTreeMap/OTM2-tiler/pull/57/files#r20436584>.
>