Updated README

README.md

@@ -67,16 +67,6 @@ cd gym_pybullet_drones/examples/
 python3 beta.py --num_drones 1 # check the steps in the file's docstrings to use multiple drones
 ```
 
-## Troubleshooting
-
-- On Ubuntu, with an NVIDIA card, if you receive a "Failed to create and OpenGL context" message, launch `nvidia-settings` and under "PRIME Profiles" select "NVIDIA (Performance Mode)", reboot and try again.
-
-Run all tests from the top folder with
-
-```sh
-pytest tests/
-```
-
 ## Citation
 
 If you wish, please cite our [IROS 2021 paper](https://arxiv.org/abs/2103.02142) ([and original codebase](https://github.com/utiasDSL/gym-pybullet-drones/tree/paper)) as
@@ -115,5 +105,15 @@ If you wish, please cite our [IROS 2021 paper](https://arxiv.org/abs/2103.02142)
 - [ ] Add motor delay, advanced ESC modeling by implementing a buffer in `BaseAviary._dynamics()`
 - [ ] Replace `rpy` with quaternions (and `ang_vel` with body rates) by editing `BaseAviary._updateAndStoreKinematicInformation()`, `BaseAviary._getDroneStateVector()`, and the `.computeObs()` methods of relevant subclasses
 
+## Troubleshooting
+
+- On Ubuntu, with an NVIDIA card, if you receive a "Failed to create and OpenGL context" message, launch `nvidia-settings` and under "PRIME Profiles" select "NVIDIA (Performance Mode)", reboot and try again.
+
+Run all tests from the top folder with
+
+```sh
+pytest tests/
+```
+
 -----
 > University of Toronto's [Dynamic Systems Lab](https://github.com/utiasDSL) / [Vector Institute](https://github.com/VectorInstitute) / University of Cambridge's [Prorok Lab](https://github.com/proroklab)