docs: Clean up readme (#1526)

README.md

@@ -38,7 +38,7 @@ able to securely manage JSON Web Keys.
 **Table of Contents**
 
 - [What is ORY Hydra?](#what-is-ory-hydra)
-  - [Who uses it?](#who-uses-it)
+  - [Who's using it?](#whos-using-it)
   - [OAuth2 and OpenID Connect: Open Standards!](#oauth2-and-openid-connect-open-standards)
   - [OpenID Connect Certified](#openid-connect-certified)
 - [Quickstart](#quickstart)
@@ -61,9 +61,6 @@ able to securely manage JSON Web Keys.
   - [Develop](#develop)
 - [Libraries and third-party projects](#libraries-and-third-party-projects)
 - [Blog posts & articles](#blog-posts--articles)
-- [Contributors](#contributors)
-- [Backers](#backers)
-- [Sponsors](#sponsors)
 
 <!-- END doctoc generated TOC please keep comment here to allow auto update -->
 
@@ -354,33 +351,3 @@ The following projects are outdated and won't work anymore in most cases. Having
 * [Creating an oauth2 custom lamda authorizer for use with Amazons (AWS) API Gateway using Hydra](https://blogs.edwardwilde.com/2017/01/12/creating-an-oauth2-custom-lamda-authorizer-for-use-with-amazons-aws-api-gateway-using-hydra/)
 * Warning, ORY Hydra has changed almost everything since writing this
 article: [Hydra: Run your own Identity and Access Management service in <5 Minutes](https://blog.gopheracademy.com/advent-2015/hydra-auth/)
-
-## Contributors
-
-This project exists thanks to all the people who contribute. [[Contribute](CONTRIBUTING.md)].
-<a href="https://github.com/ory/hydra/graphs/contributors"><img src="https://opencollective.com/ory/contributors.svg?width=890&button=false" /></a>
-
-## Backers
-
-Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com/ory#backer)]
-
-<a href="https://opencollective.com/ory#backers" target="_blank"><img src="https://opencollective.com/ory/backers.svg?width=890"></a>
-We would also like to thank (past & current) supporters (in alphabetical order) on [Patreon](https://www.patreon.com/_ory): Alexander Alimovs, Billy, Chancy Kennedy, Drozzy, Edwin Trejos, Howard Edidin, Ken Adler Oz Haven, Stefan Hans, TheCrealm
-
-
-## 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/ory#sponsor)]
-
-<a href="https://opencollective.com/ory/sponsor/0/website" target="_blank"><img src="https://opencollective.com/ory/sponsor/0/avatar.svg"></a>
-<a href="https://opencollective.com/ory/sponsor/1/website" target="_blank"><img src="https://opencollective.com/ory/sponsor/1/avatar.svg"></a>
-<a href="https://opencollective.com/ory/sponsor/2/website" target="_blank"><img src="https://opencollective.com/ory/sponsor/2/avatar.svg"></a>
-<a href="https://opencollective.com/ory/sponsor/3/website" target="_blank"><img src="https://opencollective.com/ory/sponsor/3/avatar.svg"></a>
-<a href="https://opencollective.com/ory/sponsor/4/website" target="_blank"><img src="https://opencollective.com/ory/sponsor/4/avatar.svg"></a>
-<a href="https://opencollective.com/ory/sponsor/5/website" target="_blank"><img src="https://opencollective.com/ory/sponsor/5/avatar.svg"></a>
-<a href="https://opencollective.com/ory/sponsor/6/website" target="_blank"><img src="https://opencollective.com/ory/sponsor/6/avatar.svg"></a>
-<a href="https://opencollective.com/ory/sponsor/7/website" target="_blank"><img src="https://opencollective.com/ory/sponsor/7/avatar.svg"></a>
-<a href="https://opencollective.com/ory/sponsor/8/website" target="_blank"><img src="https://opencollective.com/ory/sponsor/8/avatar.svg"></a>
-<a href="https://opencollective.com/ory/sponsor/9/website" target="_blank"><img src="https://opencollective.com/ory/sponsor/9/avatar.svg"></a>
-
-A special thanks goes out to **Wayne Robinson** for supporting this ecosystem with $200 every month since October 2016 [on Patreon](https://www.patreon.com/_ory).