Add har-rs

This PR adds the `har-rs` lib and a corresponding new section for HAR/HTTP Archive Format files used by Charles Proxy, Google Chrome etc.

README.md

@@ -841,6 +841,8 @@ See also [About Rust’s Machine Learning Community](https://medium.com/@autumn_
   * [mrhooray/crc-rs](https://github.com/mrhooray/crc-rs) — [<img src="https://api.travis-ci.org/mrhooray/crc-rs.svg?branch=master">](https://travis-ci.org/mrhooray/crc-rs)
 * CSV
   * [BurntSushi/rust-csv](https://github.com/BurntSushi/rust-csv) — [<img src="https://api.travis-ci.org/BurntSushi/rust-csv.svg?branch=master">](https://travis-ci.org/BurntSushi/rust-csv)
+* HAR
+  * [mandrean/har-rs](https://github.com/mandrean/har-rs) - A HTTP Archive Format (HAR) serialization & deserialization library
 * HTML
   * [servo/html5ever](https://github.com/servo/html5ever) — High-performance browser-grade HTML5 parser [<img src="https://api.travis-ci.org/servo/html5ever.svg?branch=master">](https://travis-ci.org/servo/html5ever)
   * [veddan/rust-htmlescape](https://github.com/veddan/rust-htmlescape) — encoding/decoding HTML entities [<img src="https://api.travis-ci.org/veddan/rust-htmlescape.svg?branch=master">](https://travis-ci.org/veddan/rust-htmlescape)