adopt for hdlr, interface specification
base search method done.req_seq: request target pageStyle of a certain sequence of renrenId
update README.md, interface spacification  of download/databse
simulator for test
refactor download to fit hdlr
add desing of renrenSpider, based on browser/database.
v download.py browser.py
login done
_download done.ok list: login,_download
_iter_page design,focus on _iter_page
new_browser(browser) test bowser with local datas
download and save renren pages locally.
getTestData uppage is available, 110 by default, 10 pages more than functional code
_iter_page base function and unittest done.no test on timeout and safety.done list:login,_download,_iter_page base function
print run info to watch _iter_page run. timeout test ok
_iter_page,friendList,status is done, together with unitest
mv testDownload.py testBrowser.py
friendlist done
fix bugs and errors
browser iterPage done. friendList,status