Update README.md

README.md

@@ -29,8 +29,12 @@ process.
         wstool init dabo_sim.rosinstall
         ```
 * If you want to use an existing ROS workspace:
-    * Copy the ana_sim.rosinstall file to the src folder of the existing workspace.
-    * Merge the dabo_sim.rosinstall file available on this repository with the existing rosinstall file following the steps 
+    * Merge the following rosinstall files:
+        * [iri_core.rosinstall](https://gitlab.iri.upc.edu/labrobotica/ros/iri_ros_how_to/-/blob/melodic_migration/rosinstall/iri_core.rosinstall)
+        * [dabo_sim.rosinstall](./rosinstalls/dabo_sim.rosinstall)
+    * For each of them:
+        * Copy the *.rosinstall file to the src folder of the existing workspace.
+        * Merge the *.rosinstall file with the existing rosinstall file following the steps 
    in this [tutorial](http://wiki.ros.org/wstool#Merge_in_Additional_rosinstall_Files). From the src folder, execute:
         ```
         roscd
@@ -82,4 +86,4 @@ All the tutorials included in this section can be used both in simulation or wit
 <p>
 
 </p>
-</details>
\ No newline at end of file
+</details>