"Added db_wrapper API"

Signed-off-by: Ionut Radu <ihonius@gmail.com>
Merge branch 'master' of https://github.com/ionutRD/RWScrapper

Conflicts:
	rwscrapper/rwscrapper/crawl/db_wrapper.py

Signed-off-by: Ionut Radu <ihonius@gmail.com>