end-to-end scraping function & made scraping more robust in various ways
in memory word and document numerotation
support for multiple queries & mongo-only
some improvements
channel for sending errors to db & google books results
basic HTTP server setup
route trigerring scraping
various minor improvements
simplified HTTP server
Heroku Procfile & a few improvements
deleted useless code and dependencies to take less room
removed some more
Calls to Google globally separated by time interval
removed lemmatization (and associated models)
changed typo in Procfile file name