adding database migration procedure to readme

README.md

@@ -9,12 +9,15 @@
  * Postgres
  * OrientDB
  
-
+ 
 ## Database
 
-
 ## Setup
-
+To setup the rails app, will be needed run active record migrations, 
+orient db migrations and populate active record database:
+ * ``` rake db:migrate ```
+ * ``` rake db:seed ```
+ * ``` rake orientdb:migrate ```
 
 ## Definitions
 Some definitions and vocabulary of project domain model.