gitignore file for Android Studio projects

This is the .gitignore file I use in my projects.

build/
local.properties
.gradle/
.idea/
*.iml
.DS_Store
.gitignore

I keep track of this files:

'your_application'/src/*
'your_application'/app/build.gradle
'your_application'/app/proguard-rules.pro
build.gradle
gradle.properties
gradle/
gradlew
gradlew.bat
settings.gradle

This way I can easily import the project as graddle projects in Android Studio.
I’ve been using this .gitignore from version 0.5.2 to 0.6.1.

Edit:

As David Wursteisen commented here:

gitignore.io can help you! example: http://www.gitignore.io/api/android,intellij,osx,windows,linux,gradle,java