update readme

README.md

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 # Flightmare
 
 ![Build Status](https://github.com/uzh-rpg/flightmare/workflows/CPP_CI/badge.svg) ![clang format](https://github.com/uzh-rpg/flightmare/workflows/clang_format/badge.svg)
+![License](https://img.shields.io/badge/License-MIT-blue.svg) ![website]( https://img.shields.io/website-up-down-green-red/https/naereen.github.io.svg)
 
 **Flightmare** is a flexible modular quadrotor simulator.
 Flightmare is composed of two main components: a configurable rendering engine built on Unity and a flexible physics engine for dynamics simulation.
 Those two components are totally decoupled and can run independently from each other. 
 Flightmare comes with several desirable features: (i) a large multi-modal sensor suite, including an interface to extract the 3D point-cloud of the scene; (ii) an API for reinforcement learning which can simulate hundreds of quadrotors in parallel; and (iii) an integration with a virtual-reality headset for interaction with the simulated environment.
 Flightmare can be used for various applications, including path-planning, reinforcement learning, visual-inertial odometry, deep learning, human-robot interaction, etc.
 
-**[Website](https://uzh-rpg.github.io/flightmare/)** 
+**[Website](https://uzh-rpg.github.io/flightmare/)** & 
+**[Documentation](https://flightmare.readthedocs.io/)** 
 
 [![IMAGE ALT TEXT HERE](./docs/flightmare_main.png)](https://youtu.be/m9Mx1BCNGFU)
 
 ## Installation
 Installation instructions can be found in our [Wiki](https://github.com/uzh-rpg/flightmare/wiki).
 
 ## Updates
+ *  17.11.2020 [Spotlight](https://youtu.be/8JyrjPLt8wo) Talk at CoRL 2020 
  *  04.09.2020 Release Flightmare
 
 ## Publication
 
-If you use this code in a publication, please cite the following paper **[PDF](https://arxiv.org/abs/2009.00563)**
+If you use this code in a publication, please cite the following paper **[PDF](http://rpg.ifi.uzh.ch/docs/CoRL20_Yunlong.pdf)**
 
 ```
 @article{song2020flightmare,