title: Should I use ProGuard?
body: <p>I want to generate signed APK in Android Studio and it offers me an option to run ProGuard. It asks me to give config file path, but I don't have config file. How to create one? Should I use ProGuard at all? 
  Can you and is it easy to unpack APK file which don't use ProGuard?</p>
  
  <p>EDIT:
  Thank you for your answers, but I can't find proguard.cfg file anywhere. Only properties file I have in root directory of the project is local.properties file and when I open it in Android Studio I got this:</p>
  
  <pre><code># This file is automatically generated by Android Studio.
  # Do not modify this file -- YOUR CHANGES WILL BE ERASED!
  #
  # This file must *NOT* be checked into Version Control Systems,
  # as it contains information specific to your local configuration.
  
  # Location of the SDK. This is only used by Gradle.
  # For customization when using a Version Control System, please read the
  # header note.
  sdk.dir=C:/.../...
  </code></pre>