Adds job title class to handle null object pattern

Author: kurenn

presenters/job_title.rb

@@ -0,0 +1,30 @@
+class User
+  attr_accessor :name
+end
+
+class NilUser
+
+  def name
+    'no name'
+  end
+
+  def email
+    'no email'
+  end
+end
+
+class JobTitle
+
+  def initialize(user)
+    @user = user || NilUser.new
+  end
+
+  def user_name
+    user.name
+  end
+
+  def user_email
+    user.email
+  end
+
+end