README.md - Discuss mixing Javascript and Rust and performance implications.

[martinfrances107]

Here are notes on what I want to say.

1. find and include wasm-bindgen quote that says

A) "Do DOM manipulation in javascript, and compute in RUST", think are still on the cutting edge.
B) bytecode alliance has a proposal for more performance exchange of data.

2. Discuss gloo_timer as an example of the division of labour between javascript and RUST

in rust only code need to define a spawm thread closure in rust that will have a wasmbingen exported equivalent representation

3. Discuss requestAnimationFrame approach using in

https://github.com/martinfrances107/rust_d3_geo_voronoi

4. Mention as a counter point yes.rs