Method with no parameters will error

So as per the Meteor guide, if you use `mdg:validated-method` to create a method that takes no parameters, you still must provide a validator, like so:

``` js
validate: new SimpleSchema({}).validator()
```

But there is an issue then if you then call that method with no parameters at all. e.g. calling

``` js
Collection.methods.methodName.call()
```

will error. As the validator, expects an object as the first parameter. Obviously just changing this to:

``` js
Collection.methods.methodName.call({})
```

fixes the issue, but it's a little awkward.