diff -r 5ae3e5665a0b -r c87042164cd8 build.gradle
--- a/build.gradle	Thu Feb 12 18:02:00 2015 +0100
+++ b/build.gradle	Thu Feb 12 21:40:00 2015 +0100
@@ -30,6 +30,7 @@
     }
     buildTypes {
         release {
+            minifyEnabled true
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-project.txt'
         }
     }