Added platform restriction on unicorn gem to ruby so that it will not be installed in windows where its dependencies are incompatible.
Added platform restriction on unicorn gem to ruby so that it will not be installed in windows where its dependencies are incompatible.

ResourceDataInc/commuter_challenge,ResourceDataInc/commuter_challenge,Ehryk/Ride-MN,Ehryk/Ride-MN,ResourceDataInc/commuter_challenge,Ehryk/Ride-MN,ResourceDataInc/commuter_challenge,Ehryk/Ride-MN