Support loading multiple databases files

[misdoro]

Allow passing multiple pattern databases as an array to the new patterns_paths argument

• Support patterns_path argument but deprecate pattern_path attribute accessor
• Add new patterns_paths array argument to enable loading multiple patterns files
• Use keyword arguments instead of options array
• Always use the faster match version since we already require ruby 2.4 in gemspec

Fixes #11

[misdoro]

Hello @opti, I saw you released a latest version of the gem. Is there a chance this pull request and #68 could be reviewed/merged?