Add Rust logo to relevant badges.

README.md

@@ -1,13 +1,13 @@
 # lzma-rs
 
-[![Crate](https://img.shields.io/crates/v/lzma-rs.svg)](https://crates.io/crates/lzma-rs)
-[![Documentation](https://docs.rs/lzma-rs/badge.svg)](https://docs.rs/lzma-rs)
-[![Safety Dance](https://img.shields.io/badge/unsafe-forbidden-success.svg)](https://github.com/rust-secure-code/safety-dance/)
+[![Crate](https://img.shields.io/crates/v/lzma-rs.svg?logo=rust)](https://crates.io/crates/lzma-rs)
+[![Documentation](https://img.shields.io/docsrs/lzma-rs?logo=rust)](https://docs.rs/lzma-rs)
+[![Safety Dance](https://img.shields.io/badge/unsafe-forbidden-success.svg?logo=rust)](https://github.com/rust-secure-code/safety-dance/)
 ![Build Status](https://github.com/gendx/lzma-rs/workflows/Build%20and%20run%20tests/badge.svg)
 [![Minimum Rust 1.65](https://img.shields.io/badge/rust-1.65%2B-orange.svg?logo=rust)](https://releases.rs/docs/1.65.0/)
 [![Codecov](https://codecov.io/gh/gendx/lzma-rs/branch/master/graph/badge.svg?token=HVo74E0wzh)](https://codecov.io/gh/gendx/lzma-rs)
 [![Lines of Code](https://tokei.rs/b1/github/gendx/lzma-rs?category=code)](https://github.com/gendx/lzma-rs)
-[![Downloads (crates.io)](https://img.shields.io/crates/d/lzma-rs?label=downloads)](https://crates.io/crates/lzma-rs)
+[![Downloads (crates.io)](https://img.shields.io/crates/d/lzma-rs?label=downloads&logo=rust)](https://crates.io/crates/lzma-rs)
 
 This project is a decoder for LZMA and its variants written in pure Rust, with focus on clarity.
 It already supports LZMA, LZMA2 and a subset of the `.xz` file format.