Feature Request: Update the docs to explain why the installation is the way it is

[SephReed]

Assumably, there is a reason that installation is not as simple as npm i pulse-fft.

It would be nice to have some explanation as to why the installation process is more involved. I don't understand this codebase enough to know why it isn't just a .wasm file and some .js files. Never-the-less, before spending time trying to learn the very unique requirements for this project, I'd like to understand why I must do so.

If it is possible to just have .wasm and .js files, that would be a significantly improved user experiece.