added backers & sponsors

now your OpenCollective backers&sponsors will appear directly on the readme. 
See how it will look: https://github.com/apex/apex#backers 
deets: https://github.com/opencollective/opencollective/wiki/Github-banner
Added some badges @ the top as well. :)

README.md

@@ -7,6 +7,8 @@ _Simple, scalable state management_
 [![Coverage Status](https://coveralls.io/repos/mobxjs/mobx/badge.svg?branch=master&service=github)](https://coveralls.io/github/mobxjs/mobx?branch=master)
 [![Join the chat at https://gitter.im/mobxjs/mobx](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/mobxjs/mobx?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 [![Discuss MobX on Hashnode](https://hashnode.github.io/badges/mobx.svg)](https://hashnode.com/n/mobx)
+[![OpenCollective](https://opencollective.com/mobx/backers/badge.svg)](#backers) 
+[![OpenCollective](https://opencollective.com/mobx/sponsors/badge.svg)](#sponsors)
 [![Donate](https://www.paypalobjects.com/en_US/i/btn/btn_donateCC_LG.gif)](https://mobxjs.github.io/mobx/donate.html)
 
 ![npm install mobx](https://nodei.co/npm/mobx.png?downloadRank=true&downloads=true)
@@ -293,3 +295,72 @@ See the [changelog](https://github.com/mobxjs/mobx/blob/master/CHANGELOG.md#200)
 Was MobX key in making your project a success? Share the victory by using the [donate button](https://mobxjs.github.io/mobx/donate.html)!
 MobX is developed largely in free time, so any ROI is appreciated :-).
 If you leave a name you will be added to the [sponsors](https://github.com/mobxjs/mobx/blob/master/sponsors.md) list :).
+
+### Backers
+Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/mobx#backer)]
+
+<a href="https://opencollective.com/mobx/backer/0/website" target="_blank"><img src="https://opencollective.com/mobx/backer/0/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/1/website" target="_blank"><img src="https://opencollective.com/mobx/backer/1/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/2/website" target="_blank"><img src="https://opencollective.com/mobx/backer/2/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/3/website" target="_blank"><img src="https://opencollective.com/mobx/backer/3/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/4/website" target="_blank"><img src="https://opencollective.com/mobx/backer/4/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/5/website" target="_blank"><img src="https://opencollective.com/mobx/backer/5/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/6/website" target="_blank"><img src="https://opencollective.com/mobx/backer/6/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/7/website" target="_blank"><img src="https://opencollective.com/mobx/backer/7/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/8/website" target="_blank"><img src="https://opencollective.com/mobx/backer/8/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/9/website" target="_blank"><img src="https://opencollective.com/mobx/backer/9/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/10/website" target="_blank"><img src="https://opencollective.com/mobx/backer/10/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/11/website" target="_blank"><img src="https://opencollective.com/mobx/backer/11/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/12/website" target="_blank"><img src="https://opencollective.com/mobx/backer/12/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/13/website" target="_blank"><img src="https://opencollective.com/mobx/backer/13/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/14/website" target="_blank"><img src="https://opencollective.com/mobx/backer/14/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/15/website" target="_blank"><img src="https://opencollective.com/mobx/backer/15/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/16/website" target="_blank"><img src="https://opencollective.com/mobx/backer/16/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/17/website" target="_blank"><img src="https://opencollective.com/mobx/backer/17/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/18/website" target="_blank"><img src="https://opencollective.com/mobx/backer/18/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/19/website" target="_blank"><img src="https://opencollective.com/mobx/backer/19/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/20/website" target="_blank"><img src="https://opencollective.com/mobx/backer/20/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/21/website" target="_blank"><img src="https://opencollective.com/mobx/backer/21/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/22/website" target="_blank"><img src="https://opencollective.com/mobx/backer/22/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/23/website" target="_blank"><img src="https://opencollective.com/mobx/backer/23/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/24/website" target="_blank"><img src="https://opencollective.com/mobx/backer/24/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/25/website" target="_blank"><img src="https://opencollective.com/mobx/backer/25/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/26/website" target="_blank"><img src="https://opencollective.com/mobx/backer/26/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/27/website" target="_blank"><img src="https://opencollective.com/mobx/backer/27/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/28/website" target="_blank"><img src="https://opencollective.com/mobx/backer/28/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/backer/29/website" target="_blank"><img src="https://opencollective.com/mobx/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/mobx#sponsor)]
+
+<a href="https://opencollective.com/mobx/sponsor/0/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/0/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/1/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/1/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/2/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/2/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/3/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/3/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/4/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/4/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/5/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/5/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/6/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/6/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/7/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/7/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/8/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/8/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/9/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/9/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/10/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/10/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/11/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/11/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/12/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/12/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/13/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/13/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/14/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/14/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/15/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/15/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/16/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/16/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/17/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/17/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/18/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/18/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/19/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/19/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/20/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/20/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/21/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/21/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/22/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/22/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/23/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/23/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/24/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/24/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/25/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/25/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/26/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/26/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/27/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/27/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/28/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/28/avatar.svg"></a>
+<a href="https://opencollective.com/mobx/sponsor/29/website" target="_blank"><img src="https://opencollective.com/mobx/sponsor/29/avatar.svg"></a>