Update DOI URL

Author: floe

README.md

@@ -18,7 +18,9 @@ Driver for Kinect for Windows v2 (K4W2) devices (release and developer preview).
 
 Note: libfreenect2 does not do anything for either Kinect for Windows v1 or Kinect for Xbox 360 sensors. Use libfreenect1 for those sensors.
 
-If you are using libfreenect2 in an academic context, please cite our work using the following DOI: [![DOI](https://zenodo.org/badge/20096/OpenKinect/libfreenect2.svg)](https://zenodo.org/badge/latestdoi/20096/OpenKinect/libfreenect2)
+If you are using libfreenect2 in an academic context, please cite our work using the following DOI: [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.50641.svg)](https://doi.org/10.5281/zenodo.50641)
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 If you use the KDE depth unwrapping algorithm implemented in the library, please also cite this ECCV 2016 [paper](http://users.isy.liu.se/cvl/perfo/abstracts/jaremo16.html).