moved shell util to separate files
able to manage cookie session now\!
able to extract question urls from the index page
question page parser(html to json)
extract related questions for a given question
crawl stackoverflow index page, extract the question information and dump them in json files, both for hxiao and nobody
command line tool: from index page html content to the json string
removed some functionality from util.py into other files
data, cookies, headers and ,ropeproject dir ignored by git