Proposition for proxying request to statics and methods

[vodolaz095]

Add proxying model instance and static methods mentioned in configuration

For example

POST /api/v1/posts/flush

will proxy request to function of static method of Active Record model

    request.model.Post.flush(request.user, request.body, function(error, someThing){...});

POST /api/v1/posts/123/subscribe

will proxy request to instance method function

    request.model.Post.findById('123', function(error, postFound){
      postFound.subscribe(request.user, request.body, function(error, someThing){...});
    });