Specified name for Leek

After cloning the latest ember-cli I get the following error:

```js
ember-cli/node_modules/leek/lib/leek.js:21
    throw new Error('You need to specify the name.');
          ^
Error: You need to specify the name.
    at new Leek (ember-cli/node_modules/leek/lib/leek.js:21:11)
    at cli (ember-cli/lib/cli/index.js:32:14)
    at ember-cli/bin/ember:25:3
    at ember-cli/node_modules/resolve/lib/async.js:48:21
    at ember-cli/node_modules/resolve/lib/async.js:127:35
    at ember-cli/node_modules/resolve/lib/async.js:99:39
    at ember-cli/node_modules/resolve/lib/async.js:65:30
    at ember-cli/node_modules/resolve/lib/async.js:23:18
    at Object.oncomplete (fs.js:107:15)
```

Adding a name property fixes it.