Merge pull request #1065 from gregdhill/google/argh

add google/argh to cli parsers

README.md

@@ -817,6 +817,7 @@ See also [About Rust’s Machine Learning Community](https://medium.com/@autumn_
 ### Command-line
 
 * Argument parsing
+  * [google/argh](https://github.com/google/argh) [[argh](https://crates.io/crates/argh)] — An opinionated Derive-based argument parser optimized for code size [![build badge](https://github.com/google/argh/workflows/Argh/badge.svg?branch=master)](https://github.com/google/argh/actions)
   * [clap-rs](https://github.com/clap-rs/clap) [[clap](https://crates.io/crates/clap)] — A simple to use, full featured command-line argument parser [![build badge](https://api.travis-ci.org/clap-rs/clap.svg?branch=master)](https://travis-ci.org/clap-rs/clap)
   * [docopt/docopt.rs](https://github.com/docopt/docopt.rs) [[docopt](https://crates.io/crates/docopt)] — A Rust implementation of [DocOpt](http://docopt.org) [![build badge](https://api.travis-ci.org/docopt/docopt.rs.svg?branch=master)](https://travis-ci.org/docopt/docopt.rs)
   * [z5labs/pflag](https://github.com/z5labs/pflag) [[pflag](https://crates.io/crates/pflag)] — A port of @spf13's amazing POSIX compliant arg parsing library in Go. [![Build Status](https://github.com/z5labs/pflag/workflows/Rust/badge.svg?branch=master)](https://github.com/z5labs/pflag/actions)