diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..0c615ea
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,8 @@
+*.iml
+*.ipr
+*.iws
+target
+.DS_Store
+.cache
+.classpath
+.project
diff --git a/proguard.cfg b/proguard.cfg
index 1158962..8c67ee3 100755
--- a/proguard.cfg
+++ b/proguard.cfg
@@ -1,18 +1,31 @@
 -dontobfuscate
 -dontoptimize
 -dontpreverify
--dontwarn
 
+-dontwarn scala.**
+
+-dontnote javax.xml.**
+-dontnote org.acra.DeviceFeaturesCollector
+-dontnote org.w3c.dom.**
+-dontnote org.xml.sax.**
 -dontnote scala.Enumeration
--dontnote org.xml.sax.EntityResolver
+
+-keep public class com.example.** { public protected *; }
 
 -keep public class scala.Option
 -keep public class scala.Function0
 -keep public class scala.Function1
+-keep public class scala.Function2
+-keep public class scala.Product
+-keep public class scala.Tuple2
+
 -keep public class scala.collection.Seq
--keep public class scala.collection.immutable.Map
 -keep public class scala.collection.immutable.List
+-keep public class scala.collection.immutable.Map
+-keep public class scala.collection.immutable.Seq
+-keep public class scala.collection.immutable.Set
 -keep public class scala.collection.immutable.Vector
+
 -keep public class * extends android.app.Activity
 -keep public class * extends android.app.Application
 -keep public class * extends android.app.Service