update README

README.md

@@ -7,14 +7,10 @@
 
 ## Installation
 
-- clone the repo `git clone --recurse-submodules git@git-st.inf.tu-dresden.de:ceti/ros/panda_gazebo_workspace.git`
-- change into the workspace `cd panda_gazebo_workspace`
 - install ROS package dependencies `rosdep install --from-paths .`
 - build the workspace `catkin build`
 - source the config: depending on your shell
     - `source devel/setup.bash` (default)
-    - `source devel/setup.sh`
-    - `source devel/setup.zsh`
 - run the simulation `roslaunch panda_simulation simulation.launch`