message: chore: add zenhub badge to readme
diff: @@ -7,6 +7,7 @@ The library of UI components used for Terminus applications.
  [![codecov][codecov-badge]][codecov-project]
  [![semantic-release][semantic-release-badge]][semantic-release]
  [![MIT License][license-image]][license-url]
  +[![ZenHub][zenhub-image]][zenhub-url]
  <br>
  [![NPM version][npm-version-image]][npm-url]
  [![Github release][gh-release-badge]][gh-releases]
  @@ -18,7 +19,6 @@ The library of UI components used for Terminus applications.
  [![style helpers](https://img.shields.io/badge/StyleHelpers-14-%2316a085.svg)](#style-helpers)
  [![validators](https://img.shields.io/badge/Validators-15-%2316a085.svg)](#validators)
  -
  ---
  <!-- START doctoc generated TOC please keep comment here to allow auto update -->
  @@ -306,6 +306,8 @@ This project follows the [all-contributors](https://github.com/kentcdodds/all-co
  [license-image]: http://img.shields.io/badge/license-MIT-blue.svg
  [gh-release-badge]: https://img.shields.io/github/release/GetTerminus/terminus-ui.svg
  [gh-releases]: https://github.com/GetTerminus/terminus-ui/releases/
  +[zenhub-image]: https://dxssrr2j0sq4w.cloudfront.net/3.2.0/img/external/zenhub-badge.png
  +[zenhub-url]: https://github.com/GetTerminus/terminus-ui#zenhub
  <!-- 3RD PARTY -->
  [codecov]: https://codecov.io
  