Add Camping::RDocTask in extras

extras/rdoctask.rb

@@ -0,0 +1,26 @@
+require 'rdoc/task'
+
+module Camping
+  # Adds after_running_rdoc
+  class RDocTask < RDoc::Task
+    def after_running_rdoc(&block)
+      @after_running_rdoc = block
+    end
+
+    def define
+      super
+      return unless after = @after_running_rdoc
+
+      task = Rake::Task[rdoc_task_name.to_sym]
+      target = Rake::Task[rdoc_target.to_sym]
+
+      task.clear.enhance do
+        begin
+          target.invoke
+        ensure
+          after.call
+        end
+      end
+    end
+  end                                
+end