ISSUE #98

* Update `README.md`.

Author: Sergio García Prado

packages/plugins/minos-database-aiopg/README.md

@@ -22,9 +22,28 @@ Install the dependency:
 pip install minos-database-aiopg
 ```
 
-Modify `config.yml` file:
-
-[TODO]
+Set the database client on the `config.yml` file:
+
+```yaml
+...
+databases:
+  default:
+    client: minos.plugins.aiopg.AiopgDatabaseClient
+    database: order_db
+    user: minos
+    password: min0s
+    host: localhost
+    port: 5432
+  query:
+    client: minos.plugins.aiopg.AiopgDatabaseClient
+    database: order_query_db
+    user: minos
+    password: min0s
+    host: localhost
+    port: 5432
+  ...
+...
+```
 
 ## Documentation