Tweak readme: <script> usage, gotchas, links to glii&arrugator

README.md

@@ -2,7 +2,7 @@
 
 Displays reprojected raster images.
 
-Leverages Glii for not going insane with the WebGL bits, and Arrugator for calculating the triangle mesh for raster reprojection.
+Leverages [Glii](https://gitlab.com/IvanSanchez/glii) for not going insane with the WebGL bits, and [Arrugator](https://gitlab.com/IvanSanchez/arrugator) for calculating the triangle mesh for raster reprojection.
 
 ### Demo
 
@@ -12,7 +12,13 @@ The demo linked above uses a downsampled version of the [N5000 raster dataset fr
 
 ### Usage
 
-This adds a `L.imageOverlay.arrugator` factory to the Leaflet namespace.
+This Leaflet plugin adds a `L.ImageOverlay.Arrugator` class and a `L.imageOverlay.arrugator` factory to the Leaflet namespace.
+
+Load the plugin in a `<script>` tag, from a local copy or from a CDN, e.g.
+
+```html
+<script src='https://unpkg.com/leaflet.imageoverlay.arrugator@1.0.0/dist/leaflet.imageoverlay.arrugator.js'></script>
+```
 
 Usage is as follows:
 
@@ -54,6 +60,14 @@ L.imageOverlay.arrugator(
 ).addTo(map);
 ```
 
+### Gotchas
+
+Even though the name of the plugin is `L.ImageOverlay.Arrugator`, this class does **not** inherit from `L.ImageOverlay` but, rather, implements parts of `L.Canvas` to support a glii-powered WebGL rendering.
+
+This shouldn't be a problem, but is worth mentioning.
+
+The epsilon for the arrugator triangulation process cannot be changed after instantiation (yet).
+
 ### Legalese
 
 Released under the General Public License, v3. See the LICENSE file for details.