Log Message:
www/ruby-rack-contrib: update to 2.1.0

* pkgsrc change: add "USE_LANGAUGES= # none" line.

2.1.0 (2018-10-04)

Spring has sprung so let's make a new release

New features:

* Rack::PostBodyContentTypeParser -- you can now pass a block to the
  middleware to override the default "parse me some JSON" behaviour.
  Thanks to Kris Dekeyser (@Kris-LEBIS) for the patch.

* Ruby 2.5 support -- we're now running the test suite through Ruby 2.5.1, as
  well as the latest patch releases of all other Ruby releases supported by
  rack-contrib (back to 2.2, the same as Rack itself). The only \ 
"interesting"
  change here is that some Rack::Profiler printers no longer work, which is
  not our fault, but rather a problem with ruby-prof.

Bug fixes:

* Remove a deprecation warning about has_rdoc. Thanks to Luciano Sousa
  (@lucianosousa) for the patch.