Tidy up gemspec files - rails version dependency, files list
fix up files list in gemspec file - no Rakefile
Crowbar cookbook is no longer needed

Everything in there has been converted into setup actions meanwhile
Merge pull request #29 from waynepallen/pull-req-master-841e46637840004f5285efc7c99575813265de65

Merged by devtool for cloudedge
Merge pull request #30 from rhafer/fix/cleanup-cookbook

Merged by devtool for VictorLowther