add basic usage and examples

README.md

@@ -4,11 +4,57 @@
 [![Python Version](https://img.shields.io/pypi/pyversions/certbot-dns-corenetworks.svg)](https://pypi.org/project/certbot-dns-corenetworks/)
 [![PyPi Status](https://img.shields.io/pypi/status/certbot-dns-corenetworks.svg)](https://pypi.org/project/certbot-dns-corenetworks/)
 [![PyPi Release](https://img.shields.io/pypi/v/certbot-dns-corenetworks.svg)](https://pypi.org/project/certbot-dns-corenetworks/)
+[![Codecov](https://img.shields.io/codecov/c/github/xoxys/certbot-dns-corenetworks)](https://codecov.io/gh/xoxys/certbot-dns-corenetworks)
 [![License: MIT](https://img.shields.io/github/license/xoxys/certbot-dns-corenetworks)](LICENSE)
 
+## Install
+
+Install this package via pip in the same python environment where you installed your certbot.
+
+```console
+pip install certbot-dns-corenetworks
+```
+
+## Usage
+
+To start using DNS authentication for the Core Networks DNS API, pass the following arguments on certbot's command line:
+
+| Option                                                               | Description                                      |
+|----------------------------------------------------------------------|--------------------------------------------------|
+| `--authenticator certbot-dns-corenetworks:dns-corenetworks`          | select the authenticator plugin (Required)       |
+| `--certbot-dns-corenetworks:dns-corenetworks-credentials`            | Hetzner DNS API credentials INI file. (Required) |
+| `--certbot-dns-corenetworks:dns-corenetworks-propagation-seconds`    | Seconds to wait for the TXT record to propagate  |
+
+## Credentials
+
+```ini
+certbot_dns_corenetworks:dns_corenetworks_username = asaHB12r
+certbot_dns_corenetworks:dns_corenetworks_password = secure_passwor
+```
+
+## Examples
+
+To acquire a certificate for `example.com`
+
+```bash
+certbot certonly \\
+ --authenticator certbot-dns-corenetworks:dns-corenetworks \\
+ --certbot-dns-corenetworks:dns-corenetworks-credentials /path/to/my/credentials.ini \\
+ -d example.com
+```
+
+To acquire a certificate for ``*.example.com``
+
+```bash
+certbot certonly \\
+    --authenticator certbot-dns-corenetworks:dns-corenetworks \\
+    --certbot-dns-corenetworks:dns-corenetworks-credentials /path/to/my/credentials.ini \\
+    -d '*.example.com'
+```
+
 ## License
 
-This project is licensed under the Apache License 2.0 - see the [LICENSE](LICENSE) file for details.
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
 
 ## Maintainers and Contributors