Link to redis:// scheme IANA registration

README.md

@@ -76,7 +76,6 @@ You can specify which Redis to connect to by:
 new Redis()       // Connect to 127.0.0.1:6379
 new Redis(6380)   // 127.0.0.1:6380
 new Redis(6379, '192.168.1.1')        // 192.168.1.1:6379
-new Redis('redis://:authpassword@127.0.0.1:6380/4')   // 127.0.0.1:6380, db 4
 new Redis('/tmp/redis.sock')
 new Redis({
   port: 6379,          // Redis port
@@ -87,6 +86,12 @@ new Redis({
 })
 ```
 
+You can also specify connection options as a [`redis://` URL](http://www.iana.org/assignments/uri-schemes/prov/redis).
+
+```javascript
+new Redis('redis://:authpassword@127.0.0.1:6380/4') // 127.0.0.1:6380, db 4
+```
+
 See [API Documentation](API.md#new_Redis) for all available options.
 
 ## Pub/Sub