Added @atuyl as organizer
Added @atuyl as organizer

@atuyl was missing
nodeschool/nodeschool.github.io,nodeschool/nodeschool.github.io,denysdovhan/nodeschool.github.io,jthoms1/nodeschool.github.io,denysdovhan/nodeschool.github.io,nodeschool/nodeschool.github.io,jthoms1/nodeschool.github.io,jthoms1/nodeschool.github.io,denysdovhan/nodeschool.github.io