Added financial contributors to the README (#2513)

README.md

@@ -1,6 +1,6 @@
 # An ACME Shell script: acme.sh [![Build Status](https://travis-ci.org/Neilpang/acme.sh.svg?branch=master)](https://travis-ci.org/Neilpang/acme.sh)
 
-<img src="https://opencollective.com/acmesh/tiers/backers/badge.svg?label=backer&color=brightgreen" /> [![Join the chat at https://gitter.im/acme-sh/Lobby](https://badges.gitter.im/acme-sh/Lobby.svg)](https://gitter.im/acme-sh/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+<a href="https://opencollective.com/acmesh" alt="Financial Contributors on Open Collective"><img src="https://opencollective.com/acmesh/all/badge.svg?label=financial+contributors" /></a> <img src="https://opencollective.com/acmesh/tiers/backers/badge.svg?label=backer&color=brightgreen" /> [![Join the chat at https://gitter.im/acme-sh/Lobby](https://badges.gitter.im/acme-sh/Lobby.svg)](https://gitter.im/acme-sh/Lobby?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 - An ACME protocol client written purely in Shell (Unix shell) language.
 - Full ACME protocol implementation.
 - Support ACME v1 and ACME v2
@@ -451,6 +451,36 @@ TODO:
 2. ACME protocol: https://github.com/ietf-wg-acme/acme
 
 
+## Contributors
+
+### Code Contributors
+
+This project exists thanks to all the people who contribute. [[Contribute](CONTRIBUTING.md)].
+<a href="https://github.com/Neilpang/acme.sh/graphs/contributors"><img src="https://opencollective.com/acmesh/contributors.svg?width=890&button=false" /></a>
+
+### Financial Contributors
+
+Become a financial contributor and help us sustain our community. [[Contribute](https://opencollective.com/acmesh/contribute)]
+
+#### Individuals
+
+<a href="https://opencollective.com/acmesh"><img src="https://opencollective.com/acmesh/individuals.svg?width=890"></a>
+
+#### Organizations
+
+Support this project with your organization. Your logo will show up here with a link to your website. [[Contribute](https://opencollective.com/acmesh/contribute)]
+
+<a href="https://opencollective.com/acmesh/organization/0/website"><img src="https://opencollective.com/acmesh/organization/0/avatar.svg"></a>
+<a href="https://opencollective.com/acmesh/organization/1/website"><img src="https://opencollective.com/acmesh/organization/1/avatar.svg"></a>
+<a href="https://opencollective.com/acmesh/organization/2/website"><img src="https://opencollective.com/acmesh/organization/2/avatar.svg"></a>
+<a href="https://opencollective.com/acmesh/organization/3/website"><img src="https://opencollective.com/acmesh/organization/3/avatar.svg"></a>
+<a href="https://opencollective.com/acmesh/organization/4/website"><img src="https://opencollective.com/acmesh/organization/4/avatar.svg"></a>
+<a href="https://opencollective.com/acmesh/organization/5/website"><img src="https://opencollective.com/acmesh/organization/5/avatar.svg"></a>
+<a href="https://opencollective.com/acmesh/organization/6/website"><img src="https://opencollective.com/acmesh/organization/6/avatar.svg"></a>
+<a href="https://opencollective.com/acmesh/organization/7/website"><img src="https://opencollective.com/acmesh/organization/7/avatar.svg"></a>
+<a href="https://opencollective.com/acmesh/organization/8/website"><img src="https://opencollective.com/acmesh/organization/8/avatar.svg"></a>
+<a href="https://opencollective.com/acmesh/organization/9/website"><img src="https://opencollective.com/acmesh/organization/9/avatar.svg"></a>
+
 # 19. License & Others
 
 License is GPLv3