Lock to latest Ruby
Remove debugger gem

Debugger gem is not too friendly with Ruby 2.1.x
Cleanup some gem definitions
Update more gem versions
Rails 4.0.4

Do not update to 4.1.0 since NYNY locks to 4.0.2 :/
Ignore duplicate results

Avoid generated files to cause more diffs than README.
Move sh => bench
Update ignore
Use STDERR (warn) to show some progress
Update Nancy app to match latest conventions
Update README with latest numbers and system details