part of Settings.sbt

    // Android
    packagingOptions   in Android := PackagingOptions(Nil, Nil, Seq("META-INF/NOTICE.txt", "META-INF/LICENSE.txt")),
    platformTarget     in Android := "android-23",
    minSdkVersion      in Android := "23",
    targetSdkVersion   in Android := "23",
    debugIncludesTests in Android := false,
    dexMulti           in Android := true,
    typedResources     in Android := false,

    // Proguard
    proguardOptions in Android ++= Seq(
      // duplicate definition :P
      "-dontnote android.net.http.**",
      "-dontnote com.facebook.**",
      "-dontnote org.apache.http.**",
      // classes that should stay
      "-keep class com.facebook.**",
      "-keep class com.talkie.client.**",
      "-keepattributes *Annotation*",
      "-keep public class * extends android.support.design.widget.CoordinatorLayout.Behavior { *; }",
      "-keep public class * extends android.support.design.widget.ViewOffsetBehavior { *; }",
      // removed unused
      "-dontwarn com.google.common.**",
      "-dontwarn org.slf4j.**",
      "-dontwarn scala.slick.**",
      "-dontwarn scalaz.**",
      "-dontwarn shapeless.**"
    )