Merge pull request #15 from stanislaw/master

Travis is on the go!
added range
Regenerate gemspec for version 0.7.0
bump version
Regenerate gemspec for version 0.7.1
added delegate decorator
range works
Regenerate gemspec for version 0.7.2
better delegate decorator
bump version
Regenerate gemspec for version 0.7.3
Attempt to inverstigate the problem with travis remotely