add instructions to firststeps.md to keep team.md up-to-date  (#410) (fixes #409)
add instructions to firststeps.md to keep team.md up-to-date  (#410) (fixes #409)


leahphuong/leahphuong.github.io,leahphuong/leahphuong.github.io,leahphuong/leahphuong.github.io