Update README.md

Author: r0f1

README.md

@@ -140,7 +140,7 @@ Python debugger (pdb) - [blog post](https://www.blog.pythonlibrary.org/2018/10/1
 [tspreprocess](https://github.com/MaxBenChrist/tspreprocess) - Time series preprocessing: Denoising, Compression, Resampling.  
 [Kaggler](https://github.com/jeongyoonlee/Kaggler) - Utility functions (`OneHotEncoder(min_obs=100)`)  
 [pyupset](https://github.com/ImSoErgodic/py-upset) - Visualizing intersecting sets.  
-[pyemd](https://github.com/wmayner/pyemd) - Earth Mover's Distance, similarity between histograms. [OpenCV implementation](https://docs.opencv.org/3.4/d6/dc7/group__imgproc__hist.html)  
+[pyemd](https://github.com/wmayner/pyemd) - Earth Mover's Distance / Wasserstein distance, similarity between histograms. [OpenCV implementation](https://docs.opencv.org/3.4/d6/dc7/group__imgproc__hist.html), [POT implementation](https://pythonot.github.io/auto_examples/plot_OT_2D_samples.html)   
 [littleballoffur](https://github.com/benedekrozemberczki/littleballoffur) - Sampling from graphs.  
 
 #### Train / Test Split