Add a gradle build.

[ed8247]

I am not sure if you want one, but I thought I would offer my work if you were interested. Because we wanted to segregate this source from our projects source I added a gradle build system. I thought I would offer it to you because I didn't change any of the layout you already have. I created the build around your project. Because it is a build system, I find that there is typically some work involved in getting it jright for any particular project so I understand if this isn't something you want. Some of the things of note for the build.

1. I tried to provide defaults for the jar name (ie with no additional properties the jar would be AceGWT-0.0.1-SNAPSHOT.jar)
2. It is setup to install to your local .m2 repo
3. A user can add a gradle.properties file to override some defaults. Also providing a repository_url property will also allow a user to publish the jar to an external repo like nexus, so long as auth isn't required.

Of course there are things that are missing. Most notably I haven't added a mvn build. And it may take a few others experiences to iron out settings just right for this project but if you are interested this could be something to start with.

[ainslec]

I don't object to having a gradle build.

I reviewed the changes and they look pretty general to me. Of course the client machine might need some setup (not sure if gradle requires a maven install to use the .m2 repo folder), but my take-away from this is that it doesn't break anything that is currently working as the changes are all additive.

I have no objections to pulling this change but I will hold off a little while to let Dave review the PR.