add remote-config to gradle deps

Author: Salakar

Diff for: android/build.gradle

@@ -46,6 +46,7 @@ dependencies {
     compile 'com.facebook.react:react-native:0.20.+'
     compile 'com.google.android.gms:play-services-base:9.8.0'
     compile 'com.google.firebase:firebase-core:9.8.0'
+    compile 'com.google.firebase:firebase-config:9.8.0'
     compile 'com.google.firebase:firebase-auth:9.8.0'
     compile 'com.google.firebase:firebase-analytics:9.8.0'
     compile 'com.google.firebase:firebase-database:9.8.0'