message: Small changes to README.md regarding json_without_ids formatQuery option
diff: @@ -407,7 +407,7 @@ Pass `false` not to reset operator and value for field change.
  ### formatQuery
  -`formatQuery` formats a given query in either SQL, JSON, or JSON without ids 'json_without_ids' (can be useful if you need to serialize the rules). Example:
  +`formatQuery` formats a given query in either SQL, JSON, or JSON without IDs (which can be useful if you need to serialize the rules). Example:
  ```js
  import { formatQuery } from 'react-querybuilder';
  @@ -470,7 +470,7 @@ const valueProcessor = (field, operator, value) => {
  console.log(formatQuery(query, 'sql', valueProcessor)); // '(instrument in ("Guitar","Vocals") and lastName = "Vai")'
  ```
  -Or you can pass 'json_without_ids' to get the same query without the IDs, it can be useful if you need to save the query to the url so that it becomes bookmarkable:
  +The 'json_without_ids' format will return the same query without the IDs. This can be useful, for example, if you need to save the query to the URL so that it becomes bookmarkable:
  ```js
  const query = {
  @@ -492,6 +492,7 @@ const query = {
  combinator: 'and',
  not: false
  };
  +
  console.log(formatQuery(query, 'json_without_ids'));
  // {
  // rules: [
  