download stuff found in sources.json and extract them. this tool is set to download geolite2 mmdb databases. for older geolite databases use version 1.x.x
npm install -g maxmind-download
$ maxmind-download
download into current directory/download
$ maxmind-download --target=/some/absolute/path
download into target (no download subdirectory)
$ maxmind-download --silent=true
silent download, no output
