Adds some definitions to play around with

Author: Bradley Marques

example/src/PlaygroundContainer.js

@@ -18,8 +18,22 @@ const useStyles = createUseStyles({
   },
 });
 
+const jsonSchema = {
+  type: 'object',
+  definitions: {
+    address: {
+      title: 'Address',
+      type: 'object',
+      properties: {
+        lineOne: { type: 'string' },
+        lineTwo: { type: 'string' }
+      }
+    },
+  },
+};
+
 export default function PlaygroundContainer({ title }: { title: string }) {
-  const [schema, setSchema] = React.useState('{}');
+  const [schema, setSchema] = React.useState(JSON.stringify(jsonSchema));
   const [uischema, setUischema] = React.useState('{}');
   const classes = useStyles();
   return (