Messageboard added

train.rb

@@ -1,15 +1,31 @@
 class Conductor
 
-	attr_reader :engineer
+	attr_reader :engineer, :messageboard
 
-	def initialize(engineer)
+	def initialize(engineer, messageboard)
 		@engineer = engineer
+    @messageboard = messageboard
 	end
 
 	def see_danger_coming!
-		engineer.slow_down!
+		messageboard.slow_down!
 	end
 end
 
 class Engineer
+
+  attr_reader :messageboard
+
+  def initialize(messageboard)
+    @messageboard = messageboard
+  end
+
+  def confirm_slow_down
+    messageboard.confirm_slow_down
+  end
+
+end
+
+class MessageBoard
+
 end

train_spec.rb

@@ -2,12 +2,18 @@
 require './train'
 describe Conductor do
 
-	let(:engineer) { Engineer.new }
-	let(:conductor) { Conductor.new(engineer)}
+	let(:engineer) { Engineer.new(messageboard) }
+	let(:conductor) { Conductor.new(engineer, messageboard)}
+  let(:messageboard) {double}
 
-	it "should tell the engineer to slow down" do
-		engineer.should_receive(:slow_down!)
+	it "should tell the message board to slow down" do
+		messageboard.should_receive(:slow_down!)
 		conductor.see_danger_coming!
-	end
+  end
+
+  it "should confirm slow down to messageboard" do
+    messageboard.should_receive(:confirm_slow_down)
+    engineer.confirm_slow_down
+  end
 
 end