Added PyPI auto publishing settings, coverage badge in README

Missing anonymization rule raises exception

* this is to prevent leaking sensitive date stored
  in columns with type the library cannot anonymize
* added anonymization for inet Postgres type

0.0.4

Proper exception raised when dump file does not exist

Added pyyaml dependency, refactoring

* unified argument positions in dump_db and anonymize_db
* removed _db postfix from dump script filename to comply with
  the anomymize filename script
* schema argument required in dump script

Added initial version of README