Release Name: 0.3.5

Notes:
* Changed license to Artistic 2.0
* Refactored test suite


Changes:
* Changed the license to Artistic 2.0.
* Added test-unit 2.x and sys-filesystem as development dependencies.
* Some updates to the gemspec, including license and description.
* Refactored the test suite to use the features of 2.x, added several
  more tests, and now skips some tests unless it's a UFS filesystem.
* Renamed the test and example files.