Quick Terminal command for those one off applications that need to be deployed via a .pkg installer:
sudo pkgbuild --install-location [Destination_Path] --component [Actual_Application_Path] [Save_Location].pkg
For example, if you have EazyDraw 8 currently installed in your /Applications folder:
sudo pkgbuild --install-location /Applications/ --component /Applications/EazyDraw\ 8.app/ ~/Desktop/EasyDraw8.pkg