Update README.md

Author: alexandremoore

README.md

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 # vue-clampy
+[![Build Status](https://img.shields.io/travis/clampy-js/vue-clampy.svg)](https://travis-ci.org/clampy-js/vue-clampy)
+[![GitHub issues](https://img.shields.io/github/issues/clampy-js/vue-clampy.svg)](https://github.com/clampy-js/vue-clampy/issues)
+[![GitHub license](https://img.shields.io/github/license/clampy-js/vue-clampy.svg)](https://github.com/clampy-js/vue-clampy/blob/master/LICENSE)
+[![npm](https://img.shields.io/npm/dt/@clampy-js/vue-clampy.svg)](https://www.npmjs.com/package/@clampy-js/vue-clampy)
+
 Vue.js (2+) directive that clamps the content of an element by adding an ellipsis to it if the content inside is too long.
 
 It uses [@clampy-js/clampy](https://github.com/clampy-js/clampy) library (a fork of [Clamp.js](https://github.com/josephschmitt/Clamp.js)) behind the scene to apply the ellipsis.