def show
      Cli::Environments::EvaluateOnly.new(options).evaluate
      DslDescriber.new.show
    end
def show
      Cli::Environments::EvaluateOnly.new(options).evaluate
      DslDescriber.new.show
    end
Shows all Guard plugins and their options that are defined in
 the `Guardfile`

 @see Guard::DslDescriber.show