add complete example application

[liblit]

@ThadHouse, you have been exceptionally helpful in getting me up and running with the Gradle JNI plugin. My simple skeleton application is now a complete working example, including proper management of the shared library in binary distributions. Would you consider adding a complete example like this to the official gradle-jni repository? Perhaps it makes sense to keep the example in a separate repository, but link to that repository from the gradle-jni documentation? I would be happy for you to fork or clone my example for that purpose.

I also welcome any constructive feedback to improve my Gradle style, especially regarding my use of the Gradle software model for native compilation. For example:

• Is this a good style for setting java.library.path?

• Is this a good style for including the native shared library in distributions?

• The above logic should include the library in distributions created using any of three different tasks: installDist, distZip, and distTar. I placed this logic in the startScripts task because that is the one task that installDist, distZip, and distTar all share as a common dependency. But this is a bit awkward, because startScripts itself really does not need to depend on having the shared library already built. Is there a more elegant way to accomplish this goal?

Thank you for any suggestions! I hope that my offer of an instructional example for others partially repays @ThadHouse for all of the help he has given me.

https://github.com/liblit/simple-jni/blob/master/build.gradle

This file contains system properties.

Will this set up work on Windows, Linux and mac ?