override setting at runtime
__init__.py in templates
add meta in request and response object
move spider templates to main folder
add more fields in setup.py
use lxm.html.fromstring to create lxml Elements
add licence
rearrage data_files
add more member function to lxml.html.HtmlElement
store settings in settings variable in each class
initiate with default settings
clean redis data at the end of crawl
store all args as variables in request and response class
read redis settings from settings module
cleanup reading args in request
changed tutorial file,index file and renamed tutorial to docspyder.

Changed tutorial to scraping doc section of python.
Merge branch 'develop' of code.quadloops.com:inzyte/crawler into develop
add sphinx_rtd_theme in requirements.txt
use parslepy and cssselect with lxml to parse html
add extract function to HtmlElement