Update Readme.md

Readme.md

-
 # Launch the nodes
 
 `cd ads1115_driver`
+
 `docker-compose up -d`
 
 # Look values
@@ -13,12 +13,15 @@
 ## Echo the rostopic
 
 `source /opt/ros/kinetic/setup.bash`
+
 `rostopic list`
+
 `rostopic echo /chatter`
 
 # Plot value on other computer
 
 `export ROS_MASTER_URI=http://rasp-abcde.local:11311`
+
 `rqt_plot`
 
 # Stop the nodes