Fixed unusued variable warnings
Tiny example fix in rakefile.rdoc
Merge pull request #159 from dancar/master

Tiny error/typo in the rakefile doc
Merge remote-tracking branch 'origin/master' into next-major-release

* origin/master:
  Tiny example fix in rakefile.rdoc
  Fixed unusued variable warnings

Conflicts:
	test/test_rake_task_with_arguments.rb
Remove commented code.