Update README.md

README.md

 # A Complete Panda Gazebo Workspace
 
-Remark: The state outside of the master branch must be considered as "work-in-progress". Only the master branch is stable here.
+## Important Remarks:
+
+- Much of the code in the contained submodules is based on the information [Erdal Pekel's Blog](https://erdalpekel.de/). **Thanks, Erdal!**
+- The state outside of the master branch must be considered as "work-in-progress". Only the master branch is stable here.
+- Currently, only very simple use cases are contained here. We will gradually update the code. Watch this space!
+- The examples only work when *all* projects in this workspace are checked out.
 
 ## Requirements
 
@@ -9,7 +14,9 @@ Remark: The state outside of the master branch must be considered as "work-in-pr
 
 ## Installation
 
-- clone the repo `git clone --recurse-submodules git@git-st.inf.tu-dresden.de:ceti/ros/panda_gazebo_workspace.git`
+- clone the repo
+    - as a guest: `git clone --recurse-submodules https://git-st.inf.tu-dresden.de/ceti/ros/panda_gazebo_workspace.git`
+    - as a project member: `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`
@@ -20,6 +27,8 @@ Remark: The state outside of the master branch must be considered as "work-in-pr
 
 ## Simulations
 
+See the [README.md of the submodule](../../../../sample_applications/-/blob/master/README.md) for more information.
+
 - For planning and simulation based on rviz: `roslaunch panda_simulation simulation.launch`
 - Execution of a simple motion: `roslaunch sample_applications sample_simple_simulation.launch`
 - Execution of a simple motion costraint by a blocking object: `roslaunch sample_applications sample_constraint_simulation.launch`