message: Minor updates to main package README.md
diff: # react-querybuilder
  -[Complete documentation](https://react-querybuilder.js.org)
  +_The Query Builder component for React_
  -## Getting Started
  +![Screenshot](../../_assets/screenshot.png)
  -```shell
  -npm install react-querybuilder --save
  -```
  +Complete documentation is available at https://react-querybuilder.js.org.
  -OR
  +## Getting Started
  ```shell
  +npm install react-querybuilder --save
  +# OR
  yarn add react-querybuilder
  ```
  @@ -18,14 +18,17 @@ yarn add react-querybuilder
  [Click here to see a live, interactive demo](https://react-querybuilder.js.org/react-querybuilder/).
  -To run the demo yourself, go through the following steps:
  +<detail>
  +<summary>To run the demo yourself...</summary>
  1. _Clone this repo_
  2. `yarn` _Install dependencies_
  3. `yarn start` _Run a local server_
  4. _Visit http://localhost:8080 in your browser_
  -To use the official replacement components as seen in the demo, take a look at the [`@react-querybuilder` org on npmjs.com](https://www.npmjs.com/org/react-querybuilder).
  +</detail>
  +
  +To use the official compatibility components as seen in the demo (select different options in the Style dropdown), take a look at the [`@react-querybuilder` org on npmjs.com](https://www.npmjs.com/org/react-querybuilder).
  ## Basic usage
  @@ -41,15 +44,15 @@ const fields = [
  { name: 'phone', label: 'Phone' },
  { name: 'email', label: 'Email', validator: ({ value }) => /^[^@]+@[^@]+/.test(value) },
  { name: 'twitter', label: 'Twitter' },
  - { name: 'isDev', label: 'Is a Developer?', valueEditorType: 'checkbox', defaultValue: false }
  + { name: 'isDev', label: 'Is a Developer?', valueEditorType: 'checkbox', defaultValue: false },
  ];
  export const App = () => {
  const [query, setQuery] = useState<RuleGroupType>({
  combinator: 'and',
  - rules: []
  + rules: [],
  });
  - return <QueryBuilder fields={fields} query={query} onQueryChange={setQuery} />;
  + return <QueryBuilder fields={fields} query={query} onQueryChange={q => setQuery(q)} />;
  };
  ```
  