message: chore: don't install `electron-installer-debian` in OS X builds
  The `electron-installer-debian` is not needed for OS X builds. On top of
  that, it seems that we're installing it twice.
diff: @@ -39,8 +39,7 @@ install:
  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
  pip install codespell;
  gem install scss_lint;
  - npm install -g bower electron-installer-debian;
  - npm install -g electron-installer-debian;
  + npm install -g bower;
  brew install afsctool;
  brew install jq;
  fi
  