docs: demo test information

demo/browser/README.md

@@ -0,0 +1,8 @@
+
+# Native browser
+
+The package illustrates the native integration of the CSV packages in a browser environnment.
+
+## Testing
+
+There are no test for this package. The only way is to start the server and navigate the pages. We could use headless browser tests.

demo/cjs/README.md

@@ -1,8 +1,10 @@
 
 # Node.js CSV demo for CommonJS
 
-The package exposes a few JavaScript and TypeScript examples to import the CSV parser using the CommonJS module loader.
+The package illustrates the usage of CommonJS modules inside a Node.js environment. It uses JavaScript and TypeScript.
 
 ## Testing
 
+The test suite execute each sample present in the `./lib` folder.
+
 For Node.js 12 and above, run `yarn test`. For versions below 12 and above 8, run `./test/node8.sh`.

demo/esm/README.md

@@ -0,0 +1,8 @@
+
+# ESM demo
+
+The package illustrates the usage of ESM inside a Node.js environment. It uses JavaScript and TypeScript.
+
+## Testing
+
+The test suite execute each sample present in the `./lib` folder.

demo/webpack/README.md

@@ -37,3 +37,7 @@ npx http-server ./dist -p 8080
 ```
 
 The web application is now accessible on [`https://localhost:8080`](https://localhost:8080).
+
+## Testing
+
+The test suite consists in building the code with webpack. We don't check if the code is working.