Add features test for user signing in on auth_signin_spec
Add features test for user signing in on auth_signin_spec

grantziolkowski/caravan,bicyclethief/caravan,grantziolkowski/caravan,bicyclethief/caravan,nyc-rock-doves-2015/caravan,grantziolkowski/caravan,nyc-rock-doves-2015/caravan,bicyclethief/caravan,nyc-rock-doves-2015/caravan