feat: load all meter service without categorized. 

#123

![screen shot 2014-12-03 at 6 41 16 pm](https://cloud.githubusercontent.com/assets/2622152/5284699/c86cb022-7b1e-11e4-8d57-98b62c58ef67.png)

```javascript
if (cache.data && cache.data.timetsamp > new Data() ...) {
  return $q.when(cache.data);
}

return getMeters();
```