Require Maven 3.2.1
Update to version 1.8 of the build-helper-maven-plugin and add some configuration for resources
Updated versions of Maven plugin used in the java-koans/lib project.
Update Maven plugins.
Use the maven-enforcer-plugin to enforce that we're using the right version of Maven
Require version 3.2.1 of Maven
Merge pull request #4 from DavidWhitlock/update-maven-stuff

Update maven plugins and require Maven 3.2.1.  Address issues #3 by upgrading the latest versions of Maven plugins and require version 3.2.1 of Maven.