Log Message:
lang/ruby-gherkin: update to 5.1.0

5.1.0 - 2018-05-30

Added

* (.NET) - Better .NET Core support
* Support for Aragonese (#298 danilat)
* (C) build a shared libgherkin.so library which allows Gherkin to be used as
  a library. (Cucumber.ml currently uses this.) (cucumber/gherkin-c#6 cyocum)

Changed

* Pass the content type of a docstring down into its pickle string form (#292
  rjwittams)
* Fixed Russian equivalents of Given and Then. (#369 cerebellum13)

Fixed

* (C) Segfault when file does not exist (#394 #395 cyocum)
* (JavaScript) (#374 #377 charlierudolph)
* (Ruby, JavaScript) Remove berp.exe from packages (#289 aslakhellesoy)
* (Go) fixes validation for go vet tool on latest versions (#330 l3pp4rd)
* (Ruby) removed unneeded files from the gem