Add TS syntax support to require-readonly-react-props (#54)

Author: short-dsb

.README/rules/require-readonly-react-props.md

@@ -96,4 +96,21 @@ Optionally, you can enable support for [implicit exact Flow types](https://mediu
 ```
 
 
+If you’re using [experimental TypeScript syntax](https://github.com/facebook/flow/blob/main/Changelog.md#02290) via the `experimental.ts_syntax=true` Flow option, you can adjust this lint rule to check for that syntax, e.g., `Readonly` versus `$ReadOnly`.
+
+
+```js
+{
+    "rules": {
+        "ft-flow/require-readonly-react-props": [
+            2,
+            {
+                "useExperimentalTypeScriptSyntax": true
+            }
+        ]
+    }
+}
+```
+
+
 <!-- assertions requireReadonlyReactProps -->

CONTRIBUTING.md

@@ -33,6 +33,6 @@ Run with `yarn lint`.
   * Use [./.README/rules/require-valid-file-annotation.md](./.README/rules/require-valid-file-annotation.md) as a template.
   * Ensure that rule documentation document includes `<!-- assertions spaceAfterTypeColon -->` declaration.
 2. Update [./.README/README.md](/.README/README.md) to include the new rule.
-3. Run `npm run create-readme` to generate the new `README.md` (you must be on `master` branch for this command to work)
+3. Run `yarn create-readme` to generate the new `README.md` (you must be on `master` branch for this command to work)
 
 Note: Sections "The following patterns are considered problems:" and "The following patterns are not considered problems:" are **generated automatically** using the test cases.