message: Readd badge links in the README
diff: @@ -4,7 +4,7 @@ Graph data structure library. Supports Rust 1.41 and later.
  Please read the [API documentation here][]
  -![build_status][]\_ ![crates][]\_ ![gitter][]\_
  +[![build_status][]](https://github.com/petgraph/petgraph/actions) [![crates][]](https://crates.io/crates/petgraph) [![gitter][]](https://gitter.im/petgraph-rs/community?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
  Crate feature flags:
  