Implement a simple React demo

docs/api.md

@@ -470,6 +470,11 @@ valid JSON and the editor is in mode `tree`, `view`, or `form`.
 
   Contents of the editor as string.
 
+### Constants
+
+- `{string[]} JSONEditor.VALID_OPTIONS`
+
+  An array with the names of all known options.
 
 ### Examples
 

examples/react_demo/.gitignore

@@ -0,0 +1,21 @@
+# See https://help.github.com/ignore-files/ for more about ignoring files.
+
+# dependencies
+/node_modules
+
+# testing
+/coverage
+
+# production
+/build
+
+# misc
+.DS_Store
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*

examples/react_demo/README.md

@@ -0,0 +1,21 @@
+# JSONEditor React demo
+
+This project was bootstrapped with [Create React App](https://github.com/facebookincubator/create-react-app).
+
+## Install
+
+Install dependencies once:
+
+```
+npm install
+```
+
+## Run
+
+To run the demo:
+
+```
+npm start
+```
+
+This will open a development server at http://localhost:3000