Lumen link updated (#1130)
Lumen link updated (#1130)

The link for the Lumen demo was broken.
0x80/gatsby,mickeyreiss/gatsby,danielfarrell/gatsby,fabrictech/gatsby,mingaldrichgan/gatsby,mickeyreiss/gatsby,Khaledgarbaya/gatsby,ChristopherBiscardi/gatsby,chiedo/gatsby,0x80/gatsby,danielfarrell/gatsby,ChristopherBiscardi/gatsby,fabrictech/gatsby,okcoker/gatsby,danielfarrell/gatsby,0x80/gatsby,fk/gatsby,Khaledgarbaya/gatsby,fk/gatsby,fk/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,fabrictech/gatsby,chiedo/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,okcoker/gatsby,mickeyreiss/gatsby,okcoker/gatsby,chiedo/gatsby,gatsbyjs/gatsby,mingaldrichgan/gatsby,gatsbyjs/gatsby,Khaledgarbaya/gatsby,mingaldrichgan/gatsby