More control over options passed to Map constructor.

Hey,

Thanks for creating this library.

I wanted to be able to disable a few of the map controls. This meant that I needed to have more control over the options passed to the [Map constructor](https://developers.google.com/maps/documentation/javascript/reference#MapOptions).

``` html
<div class="google-map" center="center" zoom="15" options='{"streetViewControl": false, "mapTypeControl":false, "zoomControl":false}'>
```

I'm happy to refactor to suit your vision of the project.

Cheers,
Tate