In the mean time:
- Quickstart (including Maven Quickstart) shows a simple hello world program illustrating how you can use GeoTools in your own application (to load a shapefile and display a map).
- Building (including the use of the Maven Eclipse Plugin) documents how to build GeoTools from source, and use the maven eclipse plugin to generate the .project and .classpath files required to import the projects into the Eclipse IDE.
Thanks to Frank for taking the effort to get involved with the project, and I am happy to see his first pull request come through.