add usage to README.md

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itchyny 2020-01-08 09:10:02 +09:00
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# mmv [![CI Status](https://github.com/itchyny/mmv/workflows/CI/badge.svg)](https://github.com/itchyny/mmv/actions)
Rename multiple files using your `$EDITOR`. The command name is named after _multi-mv_.
## Usage
```bash
mmv [files] ...
```
This command opens the editor with the list of file names so edit and write.
The command finds the changed lines and renames all the corresponding files.
## Installation
```bash