README: add badge for codecov.io

1 files changed, 5 insertions, 1 deletions

diff --git a/README.md b/README.md
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--- a/README.md
+++ b/README.md
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 # spake2.rs
 The SPAKE2 password-authenticated key-exchange algorithm, in Rust.
 
-[![Build Status](https://travis-ci.org/warner/spake2.rs.svg?branch=master)](https://travis-ci.org/warner/spake2.rs) [![Crates.io](https://img.shields.io/crates/v/spake2.svg)](https://crates.io/crates/spake2) [![Docs.rs](https://docs.rs/spake2/badge.svg)](https://docs.rs/spake2)
+[![Build Status](https://travis-ci.org/warner/spake2.rs.svg?branch=master)](https://travis-ci.org/warner/spake2.rs)
+[![codecov](https://codecov.io/gh/warner/spake2.rs/branch/master/graph/badge.svg)](https://codecov.io/gh/warner/spake2.rs)
+[![Crates.io](https://img.shields.io/crates/v/spake2.svg)](https://crates.io/crates/spake2)
+[![Docs.rs](https://docs.rs/spake2/badge.svg)](https://docs.rs/spake2)
+
 
 NOTE: this is just a beginning: you should absolutely not use this for anything at all yet. It has a long way to go. Wait until it has a real version number (at least 0.1.something) and has been published to crates.io.