update readme

README.md

@@ -2,30 +2,6 @@ DockerFile for invoice ninja (https://www.invoiceninja.com/)
 
 This image is based on `php:7` official version.
 
-The easiest way to try this image is via docker compose :
-
-```
-db:
-  image: mysql
-  environment:
-    MYSQL_DATABASE: ninja
-    MYSQL_ROOT_PASSWORD: mdp
-
-app:
-  image: invoiceninja/invoiceninja
-  links:
-    - db:mysql
-
-web:
-  image: nginx
-  volumes:
-    - ./nginx.conf:/etc/nginx/nginx.conf:ro
-  links:
-    - app
-  volumes_from:
-    - app
-  ports:
-    - 80
-```
+The easiest way to try this image is by cloning this repos and run `docker-cumpose run`.
 
 To make your data persistant, you have to mount `/var/www/app/public/logo` and `/var/www/app/storage`.