Two people were injured by gunfire at an apartment complex in Kalamazoo yesterday.  Police responded to the Interfaith Apartments at around 6:30 in the evening when the shooting was reported.  There was no one at the scene when officers arrived but two victims later showed up at area hospitals.  A 20-year-old woman was treated at Bronson for a wound to the leg.  The woman told police several men were arguing outside of her apartment and then ran in and began firing.  A 26-year-old man showed up at a hospital in Three Rivers a few hours after the shooting with a non-life threatening wound to the leg and told investigators that the shooting may have been part of a robbery attempt.