title: What to do with .rawproto files in Android Studio build directory?
body: <p>Since upgrading to the latest version of gradle, the build directory is full of files like 'build/android-profile/profile-2017-03-08-15-06-35-881.rawproto'</p>
  
  <p>Currently these are all untracked by git, to avoid having them clutter up the place, is it a good practice to commit them, or add them to .gitignore?</p>