gatsby-remark-responsive-images: use span instead of div (#1150) (#1151)
gatsby-remark-responsive-images: use span instead of div (#1150) (#1151)

* gatsby-remark-responsive-images: use span instead of div

* Fix block appearance

gatsbyjs/gatsby,okcoker/gatsby,mickeyreiss/gatsby,Khaledgarbaya/gatsby,gatsbyjs/gatsby,0x80/gatsby,fk/gatsby,Khaledgarbaya/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,chiedo/gatsby,chiedo/gatsby,fk/gatsby,mingaldrichgan/gatsby,fabrictech/gatsby,fabrictech/gatsby,mingaldrichgan/gatsby,0x80/gatsby,chiedo/gatsby,gatsbyjs/gatsby,mingaldrichgan/gatsby,ChristopherBiscardi/gatsby,mickeyreiss/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,danielfarrell/gatsby,danielfarrell/gatsby,ChristopherBiscardi/gatsby,danielfarrell/gatsby,fabrictech/gatsby,mickeyreiss/gatsby,okcoker/gatsby,okcoker/gatsby,fk/gatsby,gatsbyjs/gatsby,Khaledgarbaya/gatsby,0x80/gatsby