OutputCollector patch

Without this patch, I get the following error: `LoadError: load error: red_storm/dsl/output_collector -- java.lang.ClassNotFoundException: backtype/storm/tuple/Tuple`

Note: this is the same issue as #95, just reopened now that this repo has been moved.  I also added a test; the spec below does repro the bug for me in  JRuby 1.7.12 if the change to `lib/red_storm/dsl/output_collector.rb` is not present.