Table Of Contents - [Install](#install) - [Demo](#demo) - [Usage](#usage) - [Options](#options) * [`options.zone` defaults to 'body'](#optionszone-defaults-to-body) * [`options.color` defaults to 'white'](#optionscolor-defaults-to-white) * [`options.size` defaults to 100](#optionssize-defaults-to-100) * [`options.threshold` defaults to 0.1](#optionsthreshold-defaults-to-01) * [`options.fadeTime` d