v-link="null" still not fixed in 0.7.0

``` html
v-link="true ? null : null"
```

causes 
"Uncaught TypeError: Cannot read property 'name' of null"

Source code that caused error:

``` javascript
value: function _stringifyPath(path) {
          if (typeof path === 'object') {
            if (path.name) {
```

It is obvious that `null` is an object....
~~please allow me to do a facepalm...~~
