Adding example to load official draft-04 to README

README.md

@@ -34,6 +34,21 @@ var ajv = new Ajv({schemaId: 'id'});
 ajv.addMetaSchema(require('ajv/lib/refs/json-schema-draft-04.json'));
 ```
 
+In case the above meta schema gives you validation error on `id` or `$schema` see [issue](https://github.com/epoberezkin/ajv/issues/904) you can load the official meta schema json instead. Example with `axios` (feel free to replace `axios` with the your preferred http request package):
+
+```javascript
+// inside an async function.
+const axios = require('axios');
+const util = require('util');
+
+const response = await axios.get('http://json-schema.org/draft-04/schema#');
+if (response.status != 200) {
+  throw new Error(util.format('could not load draft-04 schema. status=%s', response.status));
+}
+
+ajv.addMetaSchema(response.data);
+```
+
 
 ## Contents