Rename proguard file

build.gradle

@@ -48,7 +48,7 @@ android {
         }
         release {
             minifyEnabled true
-            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard.txt'
+            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard.pro'
             signingConfig signingConfigs.release
         }
         // https://code.google.com/p/android/issues/detail?id=123771

proguard.pro

@@ -1,9 +1,3 @@
--dontshrink
-
 # appcompat-v21 not compatible with some samsung 4.2.2 roms
 # https://code.google.com/p/android/issues/detail?id=78377
--keep class !android.support.v7.internal.view.menu.**,** {*;}
+-keep class !android.support.v7.internal.view.menu.**
-
--keepattributes **
-
--dontwarn **