message: MINOR: Add tweet badge
diff: # harp.gl
  -[![Travis CI](https://travis-ci.com/heremaps/harp.gl.svg?branch=master)](https://travis-ci.com/heremaps/harp.gl) [![Github Actions](https://img.shields.io/endpoint.svg?url=https%3A%2F%2Factions-badge.atrox.dev%2Fheremaps%2Fharp.gl%2Fbadge%3Fref%3Dmaster&style=flat)](https://actions-badge.atrox.dev/heremaps/harp.gl/goto?ref=master) [![codecov](https://codecov.io/gh/heremaps/harp.gl/branch/master/graph/badge.svg)](https://codecov.io/gh/heremaps/harp.gl)
  +[![Travis CI](https://travis-ci.com/heremaps/harp.gl.svg?branch=master)](https://travis-ci.com/heremaps/harp.gl) [![Github Actions](https://img.shields.io/endpoint.svg?url=https%3A%2F%2Factions-badge.atrox.dev%2Fheremaps%2Fharp.gl%2Fbadge%3Fref%3Dmaster&style=flat)](https://actions-badge.atrox.dev/heremaps/harp.gl/goto?ref=master) [![codecov](https://codecov.io/gh/heremaps/harp.gl/branch/master/graph/badge.svg)](https://codecov.io/gh/heremaps/harp.gl) [![twitter](https://img.shields.io/badge/tweet-harp.gl-blue)](https://twitter.com/intent/tweet?text=harp.gl)
  `harp.gl` is an _experimental and work in progress_ open-source 3D map rendering engine written in [TypeScript](https://github.com/microsoft/TypeScript).
  