Added backers and sponsors from OpenCollective (#389)
Added backers and sponsors from OpenCollective (#389)

Now your backers & sponsors will appear automatically on your readme.
gatsbyjs/gatsby,chiedo/gatsby,fabrictech/gatsby,Khaledgarbaya/gatsby,0x80/gatsby,gatsbyjs/gatsby,okcoker/gatsby,gatsbyjs/gatsby,mingaldrichgan/gatsby,mingaldrichgan/gatsby,gatsbyjs/gatsby,chiedo/gatsby,mickeyreiss/gatsby,0x80/gatsby,danielfarrell/gatsby,okcoker/gatsby,fabrictech/gatsby,fk/gatsby,chiedo/gatsby,gatsbyjs/gatsby,danielfarrell/gatsby,Khaledgarbaya/gatsby,gatsbyjs/gatsby,danielfarrell/gatsby,ChristopherBiscardi/gatsby,Khaledgarbaya/gatsby,fk/gatsby,okcoker/gatsby,mickeyreiss/gatsby,mickeyreiss/gatsby,mingaldrichgan/gatsby,fabrictech/gatsby,0x80/gatsby,ChristopherBiscardi/gatsby,ChristopherBiscardi/gatsby,fk/gatsby,ChristopherBiscardi/gatsby