Add :build and :clean tasks to Rakefile
Refactor tests
Make the mode of the created job file configurable

Closes Issue #11
Try to catch environment errors. Closes Issue #9
Fix Ruby 1.8.7 issue with tests
Fix more Ruby 1.8.7/test issues
Remove empty directories
Hack the way the module tarball is created - fixes #12
Version bump - v0.0.2