Remove outdated opencollective info from readme

README.md

@@ -178,76 +178,6 @@ git pull upstream master
 - [C. T. Lin](https://github.com/chentsulin)
 - [Jhen-Jie Hong](https://github.com/jhen0409)
 
-## Backers
-
-Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/electron-react-boilerplate#backer)]
-
-<a href="https://opencollective.com/electron-react-boilerplate/backer/0/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/0/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/1/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/1/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/2/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/2/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/3/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/3/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/4/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/4/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/5/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/5/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/6/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/6/avatar.svg"></a>
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-<a href="https://opencollective.com/electron-react-boilerplate/backer/9/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/9/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/10/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/10/avatar.svg"></a>
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-<a href="https://opencollective.com/electron-react-boilerplate/backer/15/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/15/avatar.svg"></a>
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-<a href="https://opencollective.com/electron-react-boilerplate/backer/20/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/20/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/21/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/21/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/22/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/22/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/23/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/23/avatar.svg"></a>
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-<a href="https://opencollective.com/electron-react-boilerplate/backer/25/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/25/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/26/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/26/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/27/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/27/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/28/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/28/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/backer/29/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/backer/29/avatar.svg"></a>
-
-## Sponsors
-
-Become a sponsor and get your logo on our README on Github with a link to your site. [[Become a sponsor](https://opencollective.com/electron-react-boilerplate#sponsor)]
-
-<a href="https://opencollective.com/electron-react-boilerplate/sponsor/0/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/sponsor/0/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/sponsor/1/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/sponsor/1/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/sponsor/2/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/sponsor/2/avatar.svg"></a>
-<a href="https://opencollective.com/electron-react-boilerplate/sponsor/3/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/sponsor/3/avatar.svg"></a>
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-<a href="https://opencollective.com/electron-react-boilerplate/sponsor/15/website" target="_blank"><img src="https://opencollective.com/electron-react-boilerplate/sponsor/15/avatar.svg"></a>
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-
 ## License
 
 MIT © [Electron React Boilerplate](https://github.com/electron-react-boilerplate)