updated installation instructions

wild_visual_navigation_jackal/README.md

@@ -4,9 +4,16 @@ Simulation environment to test Wild Visual Navigation (WVN). We use a modified C
 
 ## Requirements
 
+
+```sh
+wget https://packages.clearpathrobotics.com/public.key -O - | sudo apt-key add -
+sudo sh -c 'echo "deb https://packages.clearpathrobotics.com/stable/ubuntu $(lsb_release -cs) main" > /etc/apt/sources.list.d/clearpath-latest.list'
+sudo apt-get update
+```
+
 ```sh
-$ sudo apt update 
-$ sudo apt install -y \
+sudo apt update 
+sudo apt install -y \
         ros-noetic-jackal-simulator \
         ros-noetic-jackal-desktop \
         ros-noetic-teleop-twist-keyboard \
@@ -16,5 +23,17 @@ $ sudo apt install -y \
 ## Running
 
 ```sh
-$ roslaunch wild_visual_navigation_sim sim.launch
+roslaunch wild_visual_navigation_jackal sim.launch
+```
+
+```sh
+roslaunch wild_visual_navigation_jackal teleop.launch
+```
+
+```sh
+roslaunch wild_visual_navigation_jackal view.launch
+```
+
+```sh
+roslaunch wild_visual_navigation_jackal wild_visual_navigation.launch
 ```