added publication from Taylor we cited in the MSR17 paper

android.bib

@@ -55,6 +55,16 @@
                   vulnerability},
 }
 
+@article{Taylor:2016:LSA,
+  author    = {Vincent F. Taylor and Ivan Martinovic},
+  title     = {A Longitudinal Study of App Permission Usage across the
+                  Google Play Store},
+  journal   = {CoRR},
+  volume    = {abs/1606.01708},
+  year      = {2016},
+  url       = {http://arxiv.org/abs/1606.01708},
+}
+
 @inproceedings{Tam:2015:CAR,
   author =	 {Tam, Kimberly and Khan, Salahuddin J. and Fattori,
                   Aristide and Cavallaro, Lorenzo},