add backers and sponsors to open collective
add backers and sponsors to open collective

your open collective backers and sponsors can now appear directly on your readme. 
see how it'll look: https://github.com/apex/apex#sponsors
More info: https://github.com/opencollective/opencollective/wiki/Github-banner
Also add badges on top
jingweno/jqplay,jingweno/jqplay,jingweno/jqplay