epa id: mention possibility of ties

Author: dankegel

libvin/epa.py

@@ -54,6 +54,8 @@ def id(self):
         '''
         EPA id for this vehicle.
         '''
+        # FIXME: If we don't know which trim exactly, just pick the
+        # first one.  We're guessing anyway, what with the fuzzy matching and all...
         return self.__ids[0]
 
     @property