v1.0.0 has been released🎉

After a hard work, thanks to @calebeno v1.0.0 has been released

1. added test cases, covered all statements/lines/branches, fixed some bugs, you can use truncate-html with faith
2. added new option reserveLastWord to deal with when truncate in the middle of a word
3. supports ES6 Modules, optimized for webpack/rollup
4. upgraded cheerio to v0.22.0