Added configuration of CORS to table and link

Author: abetwothree

README.md

@@ -91,6 +91,7 @@ Edit the default configuration of the server by adding options to your **laravel
 | `sslCertChainPath` | `''`                 | The path to your server's ssl certificate chain |
 | `sslPassphrase`    | `''`                 | The pass phrase to use for the certificate (if applicable) |
 | `socketio`         | `{}`                 | Options to pass to the socket.io instance ([available options](https://github.com/socketio/engine.io#methods-1)) |
+| `apiOriginAllow`   | `{}`                 | Configuration to allow API be accessed over CORS. [Example](#cross-domain-access-to-api)|
 
 ### Running with SSL
 
@@ -186,7 +187,7 @@ List of users on a channel.
 GET /apps/:APP_ID/channels/:CHANNEL_NAME/users
 ```
 
-**Cross Domain Access To API**
+## Cross Domain Access To API
 Cross domain access can be specified in laravel-echo-server.json file by changing `allowCors` in `apiOriginAllow` to `true`. You can then set the CORS origin domain you want to allow, the http allow methods as a comma separated string (only GET works since it's read only data, at least as of right now) and the allow headers to allow to the API to receive.
 
 Example below: