add weixin controler for verify weixin

spec/controllers/wei_xin_controller_spec.rb

@@ -0,0 +1,5 @@
+require 'spec_helper'
+
+describe WeiXinController do
+
+end

spec/helpers/wei_xin_helper_spec.rb

@@ -0,0 +1,15 @@
+require 'spec_helper'
+
+# Specs in this file have access to a helper object that includes
+# the WeiXinHelper. For example:
+#
+# describe WeiXinHelper do
+#   describe "string concat" do
+#     it "concats two strings with spaces" do
+#       helper.concat_strings("this","that").should == "this that"
+#     end
+#   end
+# end
+describe WeiXinHelper do
+  pending "add some examples to (or delete) #{__FILE__}"
+end