PR comments: removed duplicate instrutctions to start gazebo and extra blank line in manifest.xml

Author: Hugo Boyer

gazebojs_pubsub/tutorial.md

@@ -5,10 +5,6 @@ This page explains how to create publishers and subscribers to Gazebo topics in
 
 ## Project setup
 
-Also, because the code tries to connect to the running simulation server, launch Gazebo in a separate terminal (if it is not already running) and verify that the simulation is running (and Sim Time is increasing):
-
-    gazebo
-
 Unlike software packages that are installed once per machine, NodeJs packages like Gazebojs are installed inside each node project. Create a NodeJS project for this tutorial, and install a local copy of the gazebojs package with npm:
 
     mkdir gazeboJsPubSub
@@ -29,12 +25,13 @@ Publishers allow clients and servers to initiate communication, using typed mess
 
 ### Node session
 
-Start gazebo
+Because the code tries to connect to the running simulation server, launch Gazebo in a separate terminal (if it is not already running) and verify that the simulation is running (and Sim Time is increasing):
 
     gazebo
 
 In a separate terminal, from the gazeboJsPubSub directory, start a node interactive session:
 
+    cd gazeboJsPubSub
     node
 
 And type in the following two lines to load the Gazebo C++ module into the Node V8 script engine, and crate an instance of the Gazebo class.

manifest.xml

@@ -324,12 +324,11 @@
       <skill>intermediate</skill>
     </tutorial>
 
-      <tutorial title="Joint Events" ref='jointevents'> <markdown version="6.0+">joint_events/tutorial.md</markdown>
+    <tutorial title="Joint Events" ref='jointevents'> <markdown version="6.0+">joint_events/tutorial.md</markdown>
       <description>Use the simEventsPlugin to send messages when a model joint changes.</description>
       <skill>intermediate</skill>
     </tutorial>
 
-
     <tutorial title="Contact Sensor" ref='contact_sensor'>
       <markdown version="1.9">contact_sensor/tutorial.md</markdown>
       <markdown version="4.0+">contact_sensor/tutorial_4-0.md</markdown>