Clean up plugin ids

Author: John Rodriguez

contour-lint/build.gradle

@@ -1,5 +1,5 @@
 apply plugin: 'java-library'
-apply plugin: 'kotlin'
+apply plugin: 'org.jetbrains.kotlin.jvm'
 
 targetCompatibility = JavaVersion.VERSION_1_8
 sourceCompatibility = JavaVersion.VERSION_1_8

sample-app/build.gradle

@@ -1,6 +1,5 @@
 apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-android-extensions'
+apply plugin: 'org.jetbrains.kotlin.android'
 
 android {
   compileSdkVersion versions.compileSdk