updated Proguard file

Eyal Amir · Eyal Amir · commit 00caac514ee5 · 2016-08-31T13:29:34.000+03:00
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
@@ -15,3 +15,6 @@
 #-keepclassmembers class fqcn.of.javascript.interface.for.webview {
 #   public *;
 #}
+
+-keep class com.google.common.** { *; }
+-dontwarn com.google.common.**
