gnu: Add ruby-formatador. * gnu/packages/ruby.scm (ruby-formatador): New variable.
gnu: Add ruby-notiffany. * gnu/packages/ruby.scm (ruby-notiffany): New variable.
gnu: Add ruby-shellany. * gnu/packages/ruby.scm (ruby-shellany): New variable.
gnu: Add ruby-nenv. * gnu/packages/ruby.scm (ruby-nenv): New variable.
gnu: Add ruby-lumberjack. * gnu/packages/ruby.scm (ruby-lumberjack): New variable.
gnu: Add ruby-docile. * gnu/packages/ruby.scm (ruby-docile): New variable.
gnu: Add ruby-bio-logger. * gnu/packages/ruby.scm (ruby-bio-logger): New variable.
gnu: Add ruby-cucumber-core. * gnu/packages/ruby.scm (ruby-cucumber-core): New variable.
gnu: Add ruby-log4r. * gnu/packages/ruby.scm (ruby-log4r): New variable.
gnu: Add ruby-gherkin3. * gnu/packages/ruby.scm (ruby-gherkin3): New variable.
gnu: Add ruby-rack. * gnu/packages/ruby.scm (ruby-rack): New variable.
gnu: Add ruby-byebug. * gnu/packages/ruby.scm (ruby-byebug): New variable.
gnu: Add ruby-pg. * gnu/packages/ruby.scm (ruby-pg): New variable.
Update copyright information in (gnu packages ruby).
gnu: Add ruby-ox. * gnu/packages/ruby.scm (ruby-ox): New variable.
gnu: Add ruby-activesupport. * gnu/packages/ruby.scm (ruby-activesupport): New variable.
gnu: Add ruby-json. * gnu/packages/ruby.scm (ruby-json): New variable.
gnu: Add ruby-tzinfo. * gnu/packages/ruby.scm (ruby-tzinfo): New variable.
gnu: Add ruby-thread-safe. * gnu/packages/ruby.scm (ruby-thread-safe): New variable.
gnu: Add ruby-pry. * gnu/packages/ruby.scm (ruby-pry): New variable.