The pnFlashGames SDK is a concentrated effort to make it easy for you, the developer, to use pnFlashGames in your web project. Regardless of the programming language, or whether you are a game developer or a web developer, the SDK is aimed at making your life easier, and you development time shorter.
For now the SDK is mostly a compilation of several existing resources. But having them all together should help you out with your development.
One exciting addition if you are a web developer is the inclusion of some example PHP code for creating your own arcade plugin. The example code even shows you how to implement your own Automatic Installation Service installer.