chore: improved README.md, included example

README.md

@@ -31,8 +31,8 @@ pip install mkdocs-exporter
 
 Three plugins are currently available:
 
-- `mkdocs/exporter` (*required*): base plugin that must precedes the others
-- `mkdocs/exporter/pdf` (*optional*): the plugin that exports your pages as individual PDF documents
+- `mkdocs/exporter` (*required*): base plugin which must precede the others
+- `mkdocs/exporter/pdf` (*optional*): plugin that exports your pages as individual PDF documents
 - `mkdocs/exporter/extras` (*optional*): provides extra functionalities (buttons, HTML utilities...)
 
 ### Example
@@ -57,12 +57,17 @@ plugins:
           download: !!python/name:mkdocs_exporter.plugins.pdf.button.download
 ```
 
+Check out a [sample PDF generated by this plugin](examples/example.pdf) from the default page of the [Material for MkDocs](https://squidfunk.github.io/mkdocs-material) theme.  
+It has been built with some custom CSS and features cover pages.
+
 ## Roadmap
 
 - Documentation (based on `MkDocs` and featuring this plugin)
 - Ensure full compatibility with other themes than `mkdocs-material`
 - Combine all pages as one PDF
 
+Feel free to request additional features by submitting an issue or by contributing through a pull request.
+
 ## License
 
 This project is licensed under the `MIT License (MIT)`, which you can read [here](LICENSE.md).