added arxiv publication reference to readme

README.md

@@ -1,5 +1,9 @@
 # CUDA Visual Library
 
+## Publication
+Please find the paper acompanying this repository on arXiv:
+> Balazs Nagy, Philipp Foehn, Davide Scaramuzza, [Faster than FAST: GPU-Accelerated Frontend for High-Speed VIO](https://arxiv.org/abs/2003.13493), arXiv 2003.13493, March 2020
+
 ## Organization
 
 This library focuses on the front-end of VIO pipelines. We tried to organize
@@ -246,4 +250,4 @@ ROS support was made optional [by default it is not required]. However, if you w
 ROS_SUPPORT?=1
 # 2) or just compile accordingly:
 make solib ROS_SUPPORT=1 -j4
-```
+```