Everything running

This pull request add the python file that runs all the process to update monthly the WDPA.

You just need to run monthy_update.py to do that.

All classes now have parameters that are stored as variables in the above file. I f you need to change passwords/directories/buckets please change them on monthly_update.py.

Readme file was updated to explain the whole process and how to set up the server

If the download fails, the rest of this script will continue and attempt to update/regenerate tiles. You'd be better off stopping execution completely on exception.