[mirror] Command-line application for uploading a site to a git-pages server

Add packaging status (via Repology) to README.

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README.md
··· 17 17 18 18 1. **Downloading a binary**. You can download the [latest build][latest] or pick a [release][releases]. 19 19 20 + 1. **Installing a package**. 21 + 22 + [![Packaging status](https://repology.org/badge/vertical-allrepos/git-pages-cli.svg)](https://repology.org/project/git-pages-cli/versions) 23 + 20 24 1. **Using a Docker container**. Choose between the latest build or a [release tag][containers]. Then run: 21 25 22 26 ```console