ReportAdapter should get array of formtters. Closes cucumber#603.

features/docs/cli/specifying_multiple_formatters.feature

@@ -1,4 +1,3 @@
-@wip-new-core
 @spawn
 Feature: Running multiple formatters
 

lib/cucumber/formatter/report_adapter.rb

@@ -4,15 +4,17 @@
 module Cucumber
   module Formatter
 
-    FormatterWrapper = Struct.new(:formatter) do
+    FormatterWrapper = Struct.new(:formatters) do
       def method_missing(message, *args)
-        formatter.send(message, *args) if formatter.respond_to?(message)
+        formatters.each do |formatter|
+          formatter.send(message, *args) if formatter.respond_to?(message)
+        end
       end
     end
 
     ReportAdapter = Struct.new(:runtime, :formatter) do
-      def initialize(runtime, formatter)
-        super runtime, FormatterWrapper.new(formatter)
+      def initialize(runtime, formatters)
+        super runtime, FormatterWrapper.new(formatters)
       end
 
       extend Forwardable

lib/cucumber/runtime.rb

@@ -251,7 +251,7 @@ def mappings
 
     require 'cucumber/formatter/report_adapter'
     def report
-      @report ||= Cucumber::Formatter::ReportAdapter.new(self, @configuration.formatters(self).first)
+      @report ||= Cucumber::Formatter::ReportAdapter.new(self, @configuration.formatters(self))
     end
 
     def filters

spec/cucumber/formatter/spec_helper.rb

@@ -68,7 +68,7 @@ def mappings
 
       require 'cucumber/formatter/report_adapter'
       def report
-        @report ||= Cucumber::Formatter::ReportAdapter.new runtime, @formatter
+        @report ||= Cucumber::Formatter::ReportAdapter.new runtime, [@formatter]
       end
 
       require 'cucumber/core/gherkin/document'