README.md: fix levels.

README.md

@@ -30,29 +30,38 @@ Run it within Docker
 Assuming that docker has been installed ...
 
 ssh to ubuntu@118.25.96.118
+
 cd to /home/lanhui/englishpal
 
 \#  Stop all docker service
+
 sudo service docker restart
 
 \#  If you know the container ID, then the above comamnd is an overkill.  Use the following command instead.
+
 sudo docker stop ContainerID
 
 \#  You could get all container ID with the following command.
+
 sudo docker ps 
 
 \#  Rebuild container. Run this after modifying the source code.
+
 sudo docker build -t englishpal .
 
 \#  Run the application
+
 sudo docker run -d -p 90:80 -v /home/lanhui/englishpal/app/static/frequency:/app/static/frequency -t englishpal  \#  for permanently saving data
+
 sudo docker run -d -p 90:80 -t englishpal \#  data will be lost after existing
 
 \#  Save space.  Run it after sudo docker run
+
 sudo docker system prune -a -f
 
 
 \#  Other commands
+
 sudo docker ps -a
 
 sudo docker logs image_name, where image name could be obtained from sudo docker ps.
@@ -76,9 +85,10 @@ Feedback
 Tianhua people
 ~~~~~~~~~~~~~~~~
 
-- Need a smart phone app.  I use phone a lot.  You cannot ask students to use computers.
+Need a phone app.  I use phone a lot.  You cannot ask students to use computers.
+
+Can take a picture for text.  Automatic translation.
 
-- Can take a picture for text.  Automatic translation.
 
 
 Usability testing