Move all test classes to com.vandalsoftware.test
Repackage tests/single

Repackage the classes to com.vandalsoftware.test ->
com.vandalsoftware.example.single. This package naming better
illustrates that these projects are used as examples for testing.
Merge pull request #17 from jle/move_single_to_test_package

Move all test classes to com.vandalsoftware.test