Update app version number

app/build.gradle

@@ -8,8 +8,8 @@ android {
         applicationId "org.traccar.manager"
         minSdkVersion 19
         targetSdkVersion 25
-        versionCode 10
-        versionName "2.0"
+        versionCode 11
+        versionName "2.1"
     }
 
     buildTypes {