message: Add message output to travis-get-android-ndk script
diff: -if [[ $TRAVIS_OS_NAME == "windows" && ! -d "$HOME/android-ndk-r21e" ]]
  +if [[ $TRAVIS_OS_NAME == "windows" ]]
  then
  + echo "Setting up Android NDK"
  + if [[ ! -d "$HOME/android-ndk-r21e" ]]
  + then
  + echo "Downloading Android NDK"
  wget -q https://dl.google.com/android/repository/android-ndk-r21e-windows-x86_64.zip
  7z x android-ndk-r21e-windows-x86_64.zip "-o$HOME/"
  rm android-ndk-r21e-windows-x86_64.zip
  + else
  + echo "Using Android NDK from Travis Cache"
  + fi
  fi
  -
  