By Chris Rosvoglou Cowboys fans making the trip from Dallas to Green Bay for this weekend’s game are in for a treat. ESPN’s Ed Werder announced on Twitter that Cowboys legend Emmitt Smith is greeting fans at American Airlines’ gate this Saturday morning. “So @AmericanAir has a special guest at the gate this morning for the only non-stop flight to Green Bay for fans leaving to see the game: The NFL’s career rushing leader, @EmmittSmith22,”Werder tweeted. This is quite the surprise for Cowboys fans. They probably didn’t wake up this morning under the assumption that they’d meet Smith at the air…