add cucumber for integration testing and add a feature for statistics

refactor some stuff to support testing statistisc

script/cucumber

@@ -0,0 +1,8 @@
+#!/usr/bin/env ruby
+begin
+  load File.expand_path(File.dirname(__FILE__) + "/../vendor/plugins/cucumber/bin/cucumber")
+rescue LoadError => e
+  raise unless e.to_s =~ /cucumber/  
+  require "rubygems"
+  load File.join(Gem.bindir, "cucumber")
+end