yyx990803/vue — pull request #90 by th0r (2014-02-09 16:08:02+00:00)
Title: Support for boolean HTML-attributes

Current `v-attr` implementation doesn't support boolean attributes (e.g. `disabled`).
Here is the common use-case:
```

```
It doesn't work because `v-attr` uses `this.el.setAttribute` method. So, when `submittionAllowed` equals to `true`, then submit button will look like this:
```

```
...which is treated by browser as disabled button.
My proposal is to remove current attribute if it's value is falsy (except zero).