Update README.md

Author: Sergei Panfilov

README.md

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 [![NPM](https://nodei.co/npm/vue-notifications.png?downloads=true&downloadRank=true&stars=true)](https://nodei.co/npm/vue-notifications/)
 [![JavaScript Style Guide](https://cdn.rawgit.com/feross/standard/master/badge.svg)](https://github.com/feross/standard)
 
+| [SITE](https://se-panfilov.github.io/vue-notifications/) | [DOCS](https://se-panfilov.github.io/vue-notifications/docs/html/index.html) | [GITHUB](https://github.com/se-panfilov/vue-notifications) |
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 # vue-notifications
 
 **VueNotifications** - agnostic non-blocking notifications library, that allow you to use notifications in declaration style.