Added minor addition about how to invoke gems installed in ruby gembag.rb logstash.gemspec into an irb session
Updated based on @jordansissel input
Fixed typo
Added HipChat output.
First implementation of the RPM stuff
Merge branch 'master' into hipchat-output
Merge pull request #428 from clstokes/hipchat-output

Added HipChat output.
Merge pull request #423 from timconradinc/master

Minor README.md update
Merge pull request #427 from electrical/redhat_rpm

First implementation of the RPM stuff