fix wolfpack model require

[nlt2390]

When I create a file "test.js" in my root project folder (using Sails) with following content:

var wolfpack = require('wolfpack'),
      myModel = wolfpack('/api/models/MyModel');

WolfPack cannot find MyModel file because it expects that file in wolfpack\lib\node_modules\api\models\MyModel

try {
      model = require(model_path);
    }

process.cwd() will get the current require function caller, make wolfpack search the right dir.

[fdvj]

We could however, to improve functionality do a two-way check. If wolfpack cannot find the file in the process path + path given, it should fallback and check if the path given is found, otherwise throw.

[nlt2390]

Yes I think you should add a check or add a Sails project example with wolfpack, that "require path" really confuses me at the first time using. :)