Updated app version to 0.1.6

app/build.gradle

@@ -10,8 +10,8 @@ android {
         applicationId "me.vadik.knigopis"
         minSdkVersion 19
         targetSdkVersion 27
-        versionCode 6
-        versionName "0.1.5"
+        versionCode 7
+        versionName "0.1.6"
         archivesBaseName = "$applicationId-$versionName-$versionCode"
         vectorDrawables.useSupportLibrary = true
     }