[l.d.build] Ensure proguard config for multi-dex
[l.d.build] Ensure proguard config for multi-dex

kenrestivo/lein-droid,kenrestivo/lein-droid,nablaa/lein-droid,celeritas9/lein-droid,clojure-android/lein-droid,celeritas9/lein-droid,clojure-android/lein-droid