Update README.md

README.md

@@ -53,6 +53,10 @@ To set up the simulator, please follow the next steps:
 sudo apt-get install ros-kinetic-velodyne-description ros-kinetic-velodyne-gazebo-plugins ros-kinetic-hector-gazebo-plugins
 ```
 
+* Install the iri_core dependencies following the instructions in the [iri_ros_core_how_to](https://gitlab.iri.upc.edu/labrobotica/ros/iri_ros_how_to) repository.
+
+* Install all IRI ros dependencies:
+
  If you want to use a new ROS workspace:
 
  * Create a new workspace following the steps in this [tutorial](http://wiki.ros.org/catkin/Tutorials/create_a_workspace).