Update README because of new ShopwareInstaller types

Author: lukas-beumer

README.md

@@ -83,7 +83,7 @@ is not needed to install packages with these frameworks:
 | REDAXO       | `redaxo-addon`
 | ReIndex      | **`reindex-plugin`** <br> **`reindex-theme`**
 | Roundcube    | `roundcube-plugin`
-| shopware     | `shopware-backend-plugin`<br/>`shopware-core-plugin`<br/>`shopware-frontend-plugin`<br/>`shopware-theme`
+| shopware     | `shopware-backend-plugin`<br/>`shopware-core-plugin`<br/>`shopware-frontend-plugin`<br/>`shopware-theme`<br/>`shopware-plugin`<br/>`shopware-frontend-theme`
 | SilverStripe | `silverstripe-module`<br>`silverstripe-theme`
 | SMF          | `smf-module`<br>`smf-theme`
 | symfony1     | **`symfony1-plugin`**