Wait for async saving and removing

modules/users/tests/server/user.server.model.tests.js

@@ -52,10 +52,11 @@ describe('User Model Unit Tests:', function() {
 		});
 
 		it('should fail to save an existing user again', function(done) {
-			user.save();
-			return user2.save(function(err) {
-				should.exist(err);
-				done();
+			user.save(function() {
+				user2.save(function(err) {
+					should.exist(err);
+					done();
+				});	
 			});
 		});
 
@@ -69,7 +70,6 @@ describe('User Model Unit Tests:', function() {
 	});
 
 	after(function(done) {
-		User.remove().exec();
-		done();
+		User.remove().exec(done);
 	});
 });