Remove container when you're done

README.md

@@ -10,6 +10,7 @@ The goal of this container is to easily run [Minecraft Overviewer](https://overv
 
 ```
 docker run \
+  --rm \
   -e MINECRAFT_VERSION=1.10 \
   -v /home/user/minecraft/:/home/minecraft/server/:ro \
   -v /srv/http/minecraft/:/home/minecraft/render/:rw \