sort spacing on ##info, reorder pip installs and remove trailing whitespace

Dockerfile

@@ -72,11 +72,11 @@ RUN \
 # install pip packages
  pip install --no-cache-dir -U \
 	beets \
+	beets-copyartifacts \
 	flask \
 	pillow \
 	pip \
 	pyacoustid \
-	beets-copyartifacts \	
 	pylast && \
 
 # cleanup

README.md

@@ -68,7 +68,7 @@ See [Beets][beetsurl] for more info.
 
 Contains [beets-copyartifacts](https://github.com/sbarakat/beets-copyartifacts) plugin, [configuration details](https://github.com/sbarakat/beets-copyartifacts#configuration)
 
- ## Info
+## Info
 
 * To monitor the logs of the container in realtime `docker logs -f beets`.