Target Version update

[Muneefm]

fix #11

[bobinson]

We are on versonCode 23 now

[bobinson]

Current version is like below - please update accordingly

    compileSdkVersion 28
    defaultConfig {
        applicationId "xyz.appmaker.keralarescue.v2"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode 23
        versionName "1"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
        javaCompileOptions {
            annotationProcessorOptions {
                arguments = ["room.schemaLocation": "$projectDir/schemas".toString()]
            }
        }
    }