Doc - improve the readme about contributions

Author: Gustry

Diff for: CONTRIBUTING.md

@@ -0,0 +1,8 @@
+![3Liz](icon.png) Contributions to the library
+==============================================
+
+Any contributions are welcome to improve this library.
+You can make a pull request with your Javascript file.
+
+* Do not forget to update the main readme in the root repository
+* We encourage you having a readme in the folder too with a screenshot or GIF showing the script. Like this [folder](./library/point_buffer_on_map)

Diff for: README.md

@@ -4,26 +4,26 @@
 You can use those JavaScript scripts to enhance Lizmap Web Client.
 Documentation is [here](https://docs.lizmap.com/next/en/publish/customization/javascript.html).
 
-You might have a `README.md` inside the directory with more information.
+You might have a `README.md` inside the directory with more information and a demo.
 
-* [Add documentation](./library/add_documentation)
-* [Add hamburger menu](./library/add_hamburger_menu)
-* [Add shortcuts](./library/add_shortcuts)
+* [Add documentation](./library/add_documentation) with buttons and a dock)
+* [Add hamburger menu](./library/add_hamburger_menu) for a better UX on a small screen
+* [Add keyboard shortcuts](./library/add_shortcuts)
 * [Attribute table column filter](./library/attribute_table_column_filter)
-* [Background selector](./library/background_selector)
+* [Background selector](./library/background_selector), like on Google Maps
 * [Dynamic form field visibility](./library/dynamic_form_field_visibility)
-* [Edit GPX](./library/edit_gpx)
+* [Edit GPX](./library/edit_gpx). Import/Export GPX
 * [Google Street View](./library/google_street_view)
 * [Group collapse](./library/group_collapse)
 * [Hide value popup](./library/hide_value_popup)
 * [IGN web services](./library/ign_web_services)
-* [Multiple atlas](./library/multipleatlas) Deprecated since LWC 3.4
+* [Multiple atlas](./library/multipleatlas). Deprecated since LWC 3.4
 * [Point buffer on map](./library/point_buffer_on_map) Display a buffer on the map
 * [Popup when opening the project with metadata information](./library/popup_metadata_info)
-* [Remove button](./library/remove_button)
+* [Remove button](./library/remove_button) to make the UI lighter and easier
 * [Simple filter](./library/simplefilter)
 * [Smart filter](./library/smartfilter)
-* [Snapping while editing](./library/snapping_while_editing) Deprecated since LWC 3.4
+* [Snapping while editing](./library/snapping_while_editing). Deprecated since LWC 3.4
 * [Translation](./library/translation) To provide a Lizmap project in many languages
 * [UI](./library/ui)
 * [WMTS direct access](./library/wmts_direct_access)

Diff for: library/point_buffer_on_map/README.md

@@ -1,3 +1,5 @@
+## Buffer on the map
+
 * Add a button to enable a 1 km buffer centered on the map canvas
 
 ![demo](demo.gif)