update README.md

Author: cfvescovo

README.md

@@ -1,11 +1,13 @@
 # Ego Tree
 
-[![Crate version][crate-badge]][crate]
-[![Build status][travis-badge]][travis]
-
-[crate]: https://crates.io/crates/ego-tree
-[travis]: https://travis-ci.org/programble/ego-tree
-[crate-badge]: https://img.shields.io/crates/v/ego-tree.svg
-[travis-badge]: https://img.shields.io/travis/programble/ego-tree.svg
+[![crates.io](https://img.shields.io/crates/v/ego-tree?color=dark-green)][crate]
+[![downloads](https://img.shields.io/crates/d/ego-tree)][crate]
+[![test](https://github.com/rust-scraper/ego-tree/actions/workflows/test.yml/badge.svg)][tests]
 
 Vec-backed ID-tree.
+
+`ego-tree` is on [Crates.io][crate] and [GitHub][github].
+
+[crate]: https://crates.io/crates/ego-tree
+[github]: https://github.com/rust-scraper/ego-tree
+[tests]: https://github.com/rust-scraper/ego-tree/actions/workflows/test.yml