Merge pull request #20 from SeanPONeil/master

Allow Proguard to process serializable classes

Author: donnfelker

proguard.cfg

@@ -57,3 +57,17 @@
 }
 
 -keepclassmembers class * extends com.actionbarsherlock.ActionBarSherlock { public <init>(...); }
+
+-keepnames class * implements java.io.Serializable
+
+-keepclassmembers class * implements java.io.Serializable {
+    static final long serialVersionUID;
+    private static final java.io.ObjectStreamField[] serialPersistentFields;
+    !static !transient <fields>;
+    !private <fields>;
+    !private <methods>;
+    private void writeObject(java.io.ObjectOutputStream);
+    private void readObject(java.io.ObjectInputStream);
+    java.lang.Object writeReplace();
+    java.lang.Object readResolve();
+}