Tests failing when using google-maps directive

Hi,

I'm using Angular Google Maps (http://angular-google-maps.org/) in an experimental project, but when karma tests oftentimes fail with this error:

```
PhantomJS 1.9.7 (Mac OS X) ERROR
ReferenceError: Can't find variable: google
at /Users/netsensei/Workspace/myproject/app/bower_vendor/angular-google-maps/dist/angular-google-maps.js:3585
```

I've added this in the of the index.html file:

```

```

and this in the build:js directive:

```

```

I tried wiping the .tmp folder to force rebuilding the app: one moment it works, but when I reload grunt, the error returns.

Any ideas?

Thanks!

Start by running the Karma tests and inspect index.html, the build:js directive, and the angular-google-maps script loading order. Check why PhantomJS sometimes reaches angular-google-maps.js before the global google object exists; done means the tests run consistently without the ReferenceError.

Written by the indexing model from the issue text.