''''''''
-  todo queue and done list backends
-  created very slowest sqlite backend for todo queue and done lists (1000 url writing for 3 minutes)
-  tests for sqlite_todo backend

Use proper indent for changing the font

# Conflicts:
#	.gitignore
#	LICENSE
#	pysitemap/crawler.py
#	run.py
#	setup.py
#	sitemap.xml

modified:   LICENSE
modified:   NOTICE
modified:   README.md
modified:   composer.json
modified:   pysitemap/crawler.py
modified:   requirements.txt
modified:   run.py
modified:   setup.py

Fixed #5

now using requests and lxml.html (both required to install)
links with error code != 200 will be written in file errors.txt in the path ./

Crawler instance has no attribute 'pool'

Code cleanup

write_txt added