Update readme to reflect separate examples package.

Author: adamfranco

README.md

@@ -1,39 +1,34 @@
 # OpenMapSamples-MapLibre
 
-[OpenMapSamples](https://github.com/adamfranco/OpenMapSamples) is a library to generate and provide 
-sample data for testing vector-based map renderings. Sample data is returned as GeoJSON and can be 
-rendered by mapping systems and styles to validate their coverage of combinations of data at different 
+[OpenMapSamples](https://github.com/adamfranco/OpenMapSamples) is a library to generate and provide
+sample data for testing vector-based map renderings. Sample data is returned as GeoJSON and can be
+rendered by mapping systems and styles to validate their coverage of combinations of data at different
 zooms without hand-mapping all possible combinations.
 
 The **OpenMapSamples-MapLibre** package provides a [MapLibre](https://github.com/maplibre) control
 that allows OpenMapSamples to be swapped for real data in MapLibre-based maps.
 
-You can view a demonstration of this control at https://adamfranco.github.io/OpenMapSamples-MapLibre/. 
-Look for the control in the bottom left of the map and choose a sample to replace the normal map data 
+You can view a demonstration of this control at https://adamfranco.github.io/OpenMapSamples-examples/.
+Look for the control in the bottom left of the map and choose a sample to replace the normal map data
 with sample data and jump to the sample-data locations.
 
 ![Screen-shot of a Highway sample](https://user-images.githubusercontent.com/25242/152425778-14b8c108-e8a1-47ce-9ae0-9abe554c1d68.png)
 
-## Development and demo.
+## Usage
 
-Use `npm install --include=dev` to install all of the main dependencies and development dependencies.
+The SampleControl for MapLibre provides a button and dialog that temporarily replaces the source data in the map's style with sample data.
 
-Add a file called `.env` in the project root and add a personal MapTiler cloud key like this:
-```
-MAPTILER_API_KEY=YourMapTileAPIKey
-```
-You can register a free MapTiler API Key at: https://cloud.maptiler.com/account/keys/
-
-After your `.env` file is in place you can start the demo with:
-
-```
-npm start
 ```
+import SampleControl from 'openmapsamples-maplibre/OpenMapSamplesControl';
+import { default as OpenMapTilesSamples } from "openmapsamples/samples/OpenMapTiles";
 
-### Building the demo
+// Add our sample data.
+let sampleControl = new SampleControl({'permalinks': true});
 
-Running this command will build a self-contained build of the demo site in the `dist/` directory:
+OpenMapTilesSamples.forEach((sample, i) => {
+  sampleControl.addSample(sample);
+});
 
-```
-npm run build
+// Map is a previously configure maplibre-gl map.
+map.addControl(sampleControl, 'bottom-left');
 ```