Merge branch 'android' into 'master'

added haoyu paper on removed apps from google play

updated android.bib with paper

See merge request !5

android.bib

@@ -708,3 +708,25 @@
   crossref =	 "ICPC2018",
   month =	 may,
 }
+
+@inproceedings{Wang:2018:WAA,
+ author = {Wang, Haoyu and Li, Hao and Li, Li and Guo, Yao and Xu, Guoai},
+ title = {Why Are Android Apps Removed from Google Play?: A Large-scale Empirical Study},
+ crossref = "MSR2018",
+ isbn = {978-1-4503-5716-6},
+ pages = {231--242},
+ doi = {10.1145/3196398.3196412},
+ publisher = {ACM},
+ keywords = {Android, app mining, app store, malware},
+}
+
+@inproceedings{Nayebi:2018:AFD,
+ author = {Nayebi, Maleknaz and Kuznetsov, Konstantin and Chen, Paul and Zeller, Andreas and Ruhe, Guenther},
+ title = {Anatomy of Functionality Deletion: An Exploratory Study on Mobile Apps},
+ crossref = "MSR2018",
+ isbn = {978-1-4503-5716-6},
+ pages = {243--253},
+ doi = {10.1145/3196398.3196410},
+ publisher = {ACM},
+ keywords = {app store mining, deletion, functionality, mobile apps, survey, taxonomy},
+}

gorla.bib

@@ -6,8 +6,8 @@
   title =	 {What did Really Change with the new Release of the
                   App?},
   crossref =	 "MSR2018",
-  pages =	 {toappear},
-  keywords =	 {conference},
+  pages =	 {142--152},
+  keywords =	 {Android, app evolution, behavior change},
   pdf =		 {papers/Calciati-AppEvolution-MSR18.pdf}
 }