Fix issue #15: Add validators for :type, :delay, :output ...
Add test for correct error handling with 'type' Parser method
Add test for correct error handling with 'delay' Parser method
Add test for correct error handling with 'output' Parser method
Add test for correct error handling with 'message' and 'banner' Parser method
Fix ruby 1.8 issue
Merge pull request #28 from abinoam/issue15-rebased

Fix Issue #15 and add tests