Code cleanup

app/build.gradle

@@ -17,7 +17,10 @@ android {
 
         javaCompileOptions {
             annotationProcessorOptions {
-                arguments += ['room.schemaLocation': '$projectDir/schemas'.toString()]
+                arguments += [
+                        "room.schemaLocation": "$projectDir/schemas".toString(),
+                        "room.incremental"   : "true"
+                ]
             }
         }
     }