Improve README description

[ilyahuman]

Improve README installation description

[trezy]

I appreciate the effort! We really need to remove most of the content from the README since it's all available on the website now. This is a solid start!

[trezy]

PixiJs Create actually provides the --template flag which can greatly simplify these instructions:

Suggested change

	**If you want to start a new React project from scratch, we recommend one of the following options:**
	1. **Use the official [CLI tool to create PixiJS](https://pixijs.io/create-pixi/) projects, and choose the React
	template:**
	Select the React template from Framework Templates:
	```bash
	? Select a type of template: › - Use arrow-keys. Return to submit.
	Bundler Templates
	❯ Framework Templates
	Creation Templates
	Extension
	✔ Select a type of template: › Framework Templates
	? Select a variant: › - Use arrow-keys. Return to submit.
	❯ React
	```
	**This will create a new React + Vite project, with Pixi.js and `@pixi/react` already preconfigured!**
	2. **Manual React + Vite setup:**
	You can also install [React + Vite](https://vite.dev/guide/), or use any other React-based framework (e.g. Remix,
	Next.js, etc).
	To add `@pixi/react` to an existing React project, simply install the required dependencies:
	If you want to start a new React project from scratch, we recommend using [PixiJS Create](https://pixijs.io/create-pixi/) with the PixiJS React template:
	```bash
	npm create pixi.js@latest pixi-project -- --template framework-react
	```
	If you prefer to setup your project manually, or you're installing in an existing project, PixiJS React can be installed via your package manager: