Include this in your app-level gradle file:
apply from: "http://demo.hanekedesign.com/Android/apkverification.gradle"
Create an app-level gradle.properties file with the following contents:
KEYTOOL_LOCATION = "Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin"
KEYSTORE_LOCATION = "/Users/nthunem/AndroidStudioApplications/Northland-Church/northland_keystore.jks"
APK_LOCATION = "/Users/nthunem/AndroidStudioApplications/Northland-Church/app/app-release.apk"
ALIAS = "<your-alias>"
PASSWORD = "<your-password>"
-Only the release APK will result in a matching SHA1 Fingerprint.
-Wrap each value in double ( " ) quotes