adding arXiv record for RACS

diff --git a/CITATION b/CITATION
index 9e515e9..3ec0ee9 100644
--- a/CITATION
+++ b/CITATION
@@ -1,2 +1,2 @@
-Please cite our paper (CITE_RACS) when ever you are using RACS.
+Please cite our paper (https://arxiv.org/abs/1905.02771) when ever you are using RACS.

diff --git a/LICENSE b/LICENSE
index 74fc02c..92b67e1 100644
--- a/LICENSE
+++ b/LICENSE
@@ -7,7 +7,7 @@ use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 of the Software, and to permit persons to whom the Software is furnished to do
 so, subject to the following conditions:

-- Please cite our paper (CITE_RACS) when ever you are using RACS.
+- Please cite our paper (https://arxiv.org/abs/1905.02771) when ever you are using RACS.


 The above copyright notice and this permission notice shall be included in all