use flat badges

README.md

@@ -2,10 +2,10 @@
 
 <img src="docs/quic.png" width=303 height=124>
 
-[![Linux Build Status](https://travis-ci.org/lucas-clemente/quic-go.svg?branch=master)](https://travis-ci.org/lucas-clemente/quic-go)
-[![Windows Build Status](https://ci.appveyor.com/api/projects/status/github/lucas-clemente/quic-go?branch=master&svg=true)](https://ci.appveyor.com/project/lucas-clemente/quic-go/branch/master)
-[![Code Coverage](https://codecov.io/gh/lucas-clemente/quic-go/coverage.svg)](https://codecov.io/gh/lucas-clemente/quic-go/)
-[![Godoc Reference](https://godoc.org/github.com/lucas-clemente/quic-go?status.svg)](https://godoc.org/github.com/lucas-clemente/quic-go)
+[![Godoc Reference](https://img.shields.io/badge/godoc-reference-blue.svg?style=flat-square)](https://godoc.org/github.com/lucas-clemente/quic-go)
+[![Linux Build Status](https://img.shields.io/travis/lucas-clemente/quic-go.svg?style=flat-square&label=linux+build)](https://travis-ci.org/lucas-clemente/quic-go)
+[![Windows Build Status](https://img.shields.io/appveyor/ci/lucas-clemente/quic-go.svg?style=flat-square&label=windows+build)](https://ci.appveyor.com/project/lucas-clemente/quic-go/branch/master)
+[![Code Coverage]([![Codecov](https://img.shields.io/codecov/c/github/lucas-clemente/quic-go/master.svg?maxAge=2592000&style=flat-square)]())](https://codecov.io/gh/lucas-clemente/quic-go/)
 
 quic-go is an implementation of the [QUIC](https://en.wikipedia.org/wiki/QUIC) protocol in Go. While we're not far from being feature complete, there's still a lot of work to do regarding performance and security. At the moment, we do not recommend use in production systems. We appreciate any feedback :)