@@ -4,7 +4,7 @@ ggtree: an R package for visualization and annotation of phylogenetic trees with

 <img src="https://raw.githubusercontent.com/Bioconductor/BiocStickers/master/ggtree/ggtree.png" height="200" align="right" />

-[![](https://img.shields.io/badge/release%20version-1.8.1-green.svg?style=flat)](https://bioconductor.org/packages/ggtree) [![](https://img.shields.io/badge/devel%20version-1.9.1-green.svg?style=flat)](https://github.com/guangchuangyu/ggtree) [![Bioc](http://www.bioconductor.org/shields/years-in-bioc/ggtree.svg)](https://www.bioconductor.org/packages/devel/bioc/html/ggtree.html#since) [![](https://img.shields.io/badge/download-16674/total-blue.svg?style=flat)](https://bioconductor.org/packages/stats/bioc/ggtree) [![](https://img.shields.io/badge/download-1117/month-blue.svg?style=flat)](https://bioconductor.org/packages/stats/bioc/ggtree)

+[![Backers on Open Collective](https://opencollective.com/ggtree/backers/badge.svg)](#backers) [![Sponsors on Open Collective](https://opencollective.com/ggtree/sponsors/badge.svg)](#sponsors) [![](https://img.shields.io/badge/release%20version-1.8.1-green.svg?style=flat)](https://bioconductor.org/packages/ggtree) [![](https://img.shields.io/badge/devel%20version-1.9.1-green.svg?style=flat)](https://github.com/guangchuangyu/ggtree) [![Bioc](http://www.bioconductor.org/shields/years-in-bioc/ggtree.svg)](https://www.bioconductor.org/packages/devel/bioc/html/ggtree.html#since) [![](https://img.shields.io/badge/download-16674/total-blue.svg?style=flat)](https://bioconductor.org/packages/stats/bioc/ggtree) [![](https://img.shields.io/badge/download-1117/month-blue.svg?style=flat)](https://bioconductor.org/packages/stats/bioc/ggtree)

 [![Project Status: Active - The project has reached a stable, usable state and is being actively developed.](http://www.repostatus.org/badges/latest/active.svg)](http://www.repostatus.org/#active) [![codecov](https://codecov.io/gh/GuangchuangYu/ggtree/branch/master/graph/badge.svg)](https://codecov.io/gh/GuangchuangYu/ggtree) [![Last-changedate](https://img.shields.io/badge/last%20change-2017--06--29-green.svg)](https://github.com/GuangchuangYu/ggtree/commits/master) [![GitHub forks](https://img.shields.io/github/forks/GuangchuangYu/ggtree.svg)](https://github.com/GuangchuangYu/ggtree/network) [![GitHub stars](https://img.shields.io/github/stars/GuangchuangYu/ggtree.svg)](https://github.com/GuangchuangYu/ggtree/stargazers) [![Awesome](https://cdn.rawgit.com/sindresorhus/awesome/d7305f38d29fed78fa85652e3a63e154dd8e8829/media/badge.svg)](https://awesome-r.com/#awesome-r-graphic-displays)

@@ -80,3 +80,33 @@ Please cite the following article when using `ggtree`:

        0 +   *  *  *                                                                                   +

          ++------------------+-----------------+-----------------+-----------------+------------------++

         2015              2015.5             2016             2016.5             2017            2017.5

+

+## Contributors

+

+This project exists thanks to all the people who contribute. [[Contribute]](CONTRIBUTING.md).

+<a href="graphs/contributors"><img src="https://opencollective.com/ggtree/contributors.svg?width=890" /></a>

+

+

+## Backers

+

+Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com/ggtree#backer)]

+

+<a href="https://opencollective.com/ggtree#backers" target="_blank"><img src="https://opencollective.com/ggtree/backers.svg?width=890"></a>

+

+

+## Sponsors

+

+Support this project by becoming a sponsor. Your logo will show up here with a link to your website. [[Become a sponsor](https://opencollective.com/ggtree#sponsor)]

+

+<a href="https://opencollective.com/ggtree/sponsor/0/website" target="_blank"><img src="https://opencollective.com/ggtree/sponsor/0/avatar.svg"></a>

+<a href="https://opencollective.com/ggtree/sponsor/1/website" target="_blank"><img src="https://opencollective.com/ggtree/sponsor/1/avatar.svg"></a>

+<a href="https://opencollective.com/ggtree/sponsor/2/website" target="_blank"><img src="https://opencollective.com/ggtree/sponsor/2/avatar.svg"></a>

+<a href="https://opencollective.com/ggtree/sponsor/3/website" target="_blank"><img src="https://opencollective.com/ggtree/sponsor/3/avatar.svg"></a>

+<a href="https://opencollective.com/ggtree/sponsor/4/website" target="_blank"><img src="https://opencollective.com/ggtree/sponsor/4/avatar.svg"></a>

+<a href="https://opencollective.com/ggtree/sponsor/5/website" target="_blank"><img src="https://opencollective.com/ggtree/sponsor/5/avatar.svg"></a>

+<a href="https://opencollective.com/ggtree/sponsor/6/website" target="_blank"><img src="https://opencollective.com/ggtree/sponsor/6/avatar.svg"></a>

+<a href="https://opencollective.com/ggtree/sponsor/7/website" target="_blank"><img src="https://opencollective.com/ggtree/sponsor/7/avatar.svg"></a>

+<a href="https://opencollective.com/ggtree/sponsor/8/website" target="_blank"><img src="https://opencollective.com/ggtree/sponsor/8/avatar.svg"></a>

+<a href="https://opencollective.com/ggtree/sponsor/9/website" target="_blank"><img src="https://opencollective.com/ggtree/sponsor/9/avatar.svg"></a>

+

+