FCMPlugin.gradle

buildscript {
    repositories {
        jcenter()
        mavenLocal()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:2.3.+'
        // classpath 'com.google.gms:google-services:4.2.0'
    }
}
repositories {
    jcenter()
}
dependencies {
    compile 'com.google.firebase:firebase-core:16.0.4'
    compile 'com.google.firebase:firebase-messaging:17.3.4'

}
// apply plugin: 'com.google.gms.google-services'
// class must be used instead of id(string) to be able to apply plugin from non-root gradle file
// apply plugin: com.google.gms.googleservices.GoogleServicesPlugin