Reconstruct the frame of crawlers for better scalability. Program design is in Wiki page.
Crawler is a base class
CrawlerRunner is the beginning.
Now we can parse page and get infomation from web Chinawetong. But the code hasn't been finished yet.
Merge branch 'master' of https://github.com/mingzhou/LogisticsPlatform

push the new crawler code
Modify ChinawutongCrawler
Chinawutong能跑通并将数据写入mongodb
添加56qq网站的爬虫
修改MongoWriter设计模式
修改56qq爬虫，但还没运行过
根据python code style修改文件名
Merge branch 'master' of https://github.com/mingzhou/LogisticsPlatform

爬虫改写