Add NeurIPS 2020 detection challenge (nutonomy#488)

* Add detection challenge

* Add AIDO link

Co-authored-by: Holger Caesar <holger.caesar@motional.com>

python-sdk/nuscenes/eval/detection/README.md

@@ -31,14 +31,18 @@ Any user that cannot attend the workshop (direct or via a representative) will b
 
 Click [here](http://evalai.cloudcv.org/web/challenges/challenge-page/356) for the **EvalAI detection evaluation server**.
 
+### 5th AI Driving Olympics, NeurIPS 2020 
+The third nuScenes detection challenge will be held at [NeurIPS 2020](https://nips.cc/Conferences/2020/).
+Submission will open on Nov 15, 2020 and close in early Dec, 2020.
+Results and winners will be announced at the [5th AI Driving Olympics](https://driving-olympics.ai/) at NeurIPS 2020.
+Note that this challenge uses the same [evaluation server](http://evalai.cloudcv.org/web/challenges/challenge-page/356) as previous detection challenges.
+
 ### Workshop on Benchmarking Progress in Autonomous Driving, ICRA 2020
 The second nuScenes detection challenge will be held at [ICRA 2020](https://www.icra2020.org/).
 The submission period will open April 1 and continue until May 28th, 2020.
 Results and winners will be announced at the [Workshop on Benchmarking Progress in Autonomous Driving](http://montrealrobotics.ca/driving-benchmarks/).
 Note that the previous [evaluation server](http://evalai.cloudcv.org/web/challenges/challenge-page/356) can still be used to benchmark your results after the challenge period.
 
-*Update:* Due to the COVID-19 situation, participants are **not** required to attend in person to be eligible for the prizes.
-
 ### Workshop on Autonomous Driving, CVPR 2019
 The first nuScenes detection challenge was held at CVPR 2019.
 Submission opened May 6 and closed June 12, 2019.

python-sdk/nuscenes/eval/lidarseg/README.md

@@ -31,14 +31,12 @@ Any user that cannot attend the workshop (direct or via a representative) will b
 Click [here](http://evalai.cloudcv.org/web/challenges/challenge-page/) for the **EvalAI lidar segmentation evaluation server** (coming soon).
 
 ### 5th AI Driving Olympics, NeurIPS 2020
-The first nuScenes lidar segmentation challenge will be held at NeurIPS 2020.
+The first nuScenes lidar segmentation challenge will be held at [NeurIPS 2020](https://nips.cc/Conferences/2020/).
 Submission will open on Nov 15, 2020 and close in early Dec, 2020.
-Results and winners will be announced at the 5th AI Driving Olympics at [NeurIPS 2020](https://nips.cc/Conferences/2020/).
+Results and winners will be announced at the [5th AI Driving Olympics](https://driving-olympics.ai/) at NeurIPS 2020.
 For more information see the [leaderboard](https://www.nuscenes.org/lidar-segmentation) (coming soon).
 Note that the [evaluation server](http://evalai.cloudcv.org/web/challenges/challenge-page/) (coming soon) can still be used to benchmark your results.
 
-*Note:* Due to the COVID-19 situation, participants are **not** required to attend in person to be eligible for the prizes.
-
 ## Submission rules
 ### Lidar segmentation-specific rules
 * The maximum time window of past sensor data and ego poses that may be used at inference time is approximately 0.5s (at most 6 past camera images, 6 past radar sweeps and 10 past lidar sweeps). At training time there are no restrictions.