Update component-model/examples/tutorial/www/README.md

Co-authored-by: Kate Goldenring <[email protected]>

Author: nuke-web3

component-model/examples/tutorial/www/README.md

@@ -2,6 +2,7 @@
 
 ## Calculator with `jco`
 
+This is an example implementation of running a component that exports the `calculate` interface from a JavaScript application. It uses`jco` to generate JavaScript bindings and shows how the same component can be executed in the browser or locally with Node. For another example of using `jco` with components in multiple environments, see the [`jco` example](https://github.com/bytecodealliance/jco/blob/main/docs/src/example.md)
 Using [`jco`](https://github.com/bytecodealliance/jco/blob/main/docs/src/example.md)
 See the [`jco` example](https://github.com/bytecodealliance/jco/blob/main/docs/src/example.md) that was used to create this minimal demo.