Update README.md

updated readme

added option to insert css into pre-defined styletag with id="sentinel-css", bumped version number

bumped version number

Merge pull request #19 from pionxzh/types

added TypeScript declaration file

Create FUNDING.yml

updated package-log.json

added display:none test and updated README to reflect that SentinelJS does not detect elements with style display:none

upgraded devDependencies, added attribute selector example

updated file size in README

bumped version number

added support for Event object constructor in event

removed node_modules directory

Added 'sentinel-load' event, bumped version number