Hello World example in Scalatra building with Gradle

Of note is that we're using the gretty plugin to run our webapp, since the default jetty plugin uses a too old version of the servlet API.

In addition the most basic of dependencies are included, but if you wanted support for more features (say templating), then you'd have to import these in the dependencies section as normal.

Running the webapp

1. Clone the project
2. gradle appRun
3. Go to http://localhost:8080