Update README.md

README.md

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 # Snap Carousel
 
-A very lightweight (4.7kB gzip) carousel library using the css [scroll-snap](https://developer.mozilla.org/en-US/docs/Web/CSS/scroll-snap-type) feature
+A very lightweight (4.7kB gzip) carousel library using the css [scroll-snap](https://developer.mozilla.org/en-US/docs/Web/CSS/scroll-snap-type) feature and the custom element shadow DOM to allow customization
 
-Check de [demo](https://corentin-gautier.github.io/snap-carousel/)
+Check de [demo](https://corentin-gautier.github.io/snap-carousel/) for examples
+
+## Features
+- Prev/Next buttons
+- Pagination
+- Pager (ie: "1 of 6")
+- loop (the css one, no cloning)
+- autoplay with stop on hover
+- Responsive configuration
 
 ## Documentation
-coming soon ;)
+
+### How to use : Example
+```html
+<snap-carousel
+    displayed="2"
+    per-page="1"
+    nav
+    controls
+    stop
+    gap="16"
+    padding="16"
+    behavior="smooth"
+    loop
+    autoplay="3000"
+    use-pause
+    responsive="..."
+>
+</snap-carousel>
+```
+
+### Options
+TODO
+| Attribute     | Signification |
+| ------------- | ------------- |
+| vertical     | ...  |
+| displayed     | ...  |
+| per-page      | ...  |
+| nav      | ...  |
+| controls      | ...  |
+| pager      | ...  |
+| stop      | ...  |
+| gap      | ...  |
+| padding      | ...  |
+| behaviour      | ...  |
+| loop      | ...  |
+| autoplay      | ...  |
+| use-pause      | ...  |
+| responsive      | ...  |
+
+## Customize the controls
+TODO