Wrap call to hook .initialize() method in try/catch

Otherwise errors thrown inside of initialize methods go uncaught.  For example, without this, the error thrown in the "cookieParser" default middleware in lib/hooks/http/middleware/defaults.js crashes the cookieParser middleware test (and not in a good way).

lib/hooks/index.js

@@ -70,7 +70,11 @@ module.exports = function(sails) {
 
       }, function(err) {
         if (err) return cb(err);
-        self.initialize(cb);
+        try {
+          self.initialize(cb);
+        } catch(e) {
+          return cb(e);
+        }
       });
 
     };