update gitignore for gradle project

.gitignore

@@ -1,3 +1,47 @@
+# auto-generated files from Android builds
+build.xml
+ant.properties
+default.properties
+proguard.cfg
+proguard-project.txt
+#
+releases
+docs
+doc
+.directory
+
+#built application files
+*.apk
+*.ap_
+
+# files for the dex VM
+*.dex
+
+# Java class files
+*.class
+
+# subdirs for generated files
+bin/
+gen/
+
+# Local configuration file (sdk path, etc)
+local.properties
+
+# Windows thumbnail db
+Thumbs.db
+
+# OSX files
+.DS_Store
+
+# Android Studio
+*.iml
+.idea/
+.gradle/
+build/
+
+#tfx
+.transifexrc
+
 /external/appcompat/bin/
 /external/appcompat/gen/
 /external/bin/
@@ -14,17 +58,6 @@ native
 libs/jtorctl.jar
 local.properties
 builds
-/patches/*
+external/patches/*
 obj
-releases
-.transifexrc
 
-# native build products
-*.so
-pdnsd
-*.mp3
-
-# ant build products
-build.xml
-proguard-project.txt
-ant.properties