No migration has run

Hi, 

Can't install, I need a table in DB.

```
[previous exception] [object] (PDOException(code: 42P01): SQLSTATE[42P01]: Undefined table: 7 ERROR:  relation \"audits\" does not exist
LINE 1: select * from \"audits\" where \"audits\".\"auditable_id\" = $1 an...
                      ^ at /home/julien/Code/acc/vendor/doctrine/dbal/lib/Doctrine/DBAL/Driver/PDOStatement.php:127)

```