playing kotlin dsl

build.gradle.kts

dependencies {
    implementation(fileTree(mapOf("dir" to "libs", "include" to listOf("*.jar"))))
    implementation("org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.21")
    implementation("com.android.support:appcompat-v7:28.0.0")
    implementation("com.android.support.constraint:constraint-layout:1.1.3")
    testImplementation("junit:junit:4.12")
    androidTestImplementation("com.android.support.test:runner:1.0.2")
    androidTestImplementation("com.android.support.test.espresso:espresso-core:3.0.2")
}