added redis configure

lib/weixin_authorize/client.rb

 # encoding: utf-8
+require "redis"
+
 module WeixinAuthorize
 
   class Client

lib/weixin_authorize/config.rb

+module WeixinAuthorize
+
+  class << self
+
+    attr_accessor :config
+
+    def configure
+      yield self.config ||= Config.new
+    end
+  end
+
+  class Config
+    attr_accessor :redis
+  end
+end

spec/spec_helper.rb

@@ -16,7 +16,17 @@
 require "rspec"
 require "weixin_authorize"
 require "multi_json"
+require "redis"
+require "redis-namespace"
 
+require "pry-rails"
+
+redis = Redis.new(:host => "127.0.0.1",:port => "6379")
+
+redis_with_ns = Redis::Namespace.new("your_app_name:weixin_authorize", :redis => redis)
+WeixinAuthorize.configure do |config|
+  config.redis = redis_with_ns
+end
 
 $client = WeixinAuthorize::Client.new(ENV["APPID"], ENV["APPSECRET"])