Added arun.is to Site (#1190)
Added arun.is to Site (#1190)

Added arun.is (Arun Venkatesan's site) to featured Gatsby sites based on Kyle's suggestion: https://twitter.com/kylemathews/status/875382218599800832
fabrictech/gatsby,gatsbyjs/gatsby,chiedo/gatsby,gatsbyjs/gatsby,chiedo/gatsby,ChristopherBiscardi/gatsby,fk/gatsby,0x80/gatsby,gatsbyjs/gatsby,okcoker/gatsby,Khaledgarbaya/gatsby,danielfarrell/gatsby,fabrictech/gatsby,mingaldrichgan/gatsby,ChristopherBiscardi/gatsby,mickeyreiss/gatsby,Khaledgarbaya/gatsby,gatsbyjs/gatsby,0x80/gatsby,0x80/gatsby,mickeyreiss/gatsby,danielfarrell/gatsby,gatsbyjs/gatsby,okcoker/gatsby,ChristopherBiscardi/gatsby,Khaledgarbaya/gatsby,danielfarrell/gatsby,chiedo/gatsby,mingaldrichgan/gatsby,okcoker/gatsby,fabrictech/gatsby,fk/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,mingaldrichgan/gatsby,fk/gatsby,mickeyreiss/gatsby