WIP: Hansen analysis for loss

Boom:

http://hansen.gfw-apis.appspot.com/datasets/hansen?layer=loss&geom={%22type%22:%22Polygon%22,%22coordinates%22:[[[102.65350,-0.73499],[103.75488,-0.89153],[104.14764,-1.57527],[102.77161,-1.47368]]]}

Gives:

```json
{
   "percent":{
      "2002":1.9966222915041087,
      "2003":1.1870389367657674,
      "2001":1.6547742563060646,
      "2006":4.0649652906080593,
      "2007":4.5303926107208508,
      "2004":4.6090374476645835,
      "2005":2.7850242630506181,
      "2008":6.2511960612089847,
      "2009":4.7399017399539272,
      "2011":0.80362753029235201,
      "2010":0.78036573932823039,
      "2012":3.9541263957490189
   },
   "area":{
      "2002":208.33516856552924,
      "2003":123.8601602502595,
      "2001":172.6654435805728,
      "2006":424.15394871407898,
      "2007":472.71840660045905,
      "2004":480.9245081906646,
      "2005":290.60003074724784,
      "2008":652.27358759340586,
      "2009":494.57938648662491,
      "2011":83.85355492612284,
      "2010":81.426331128075503,
      "2012":412.58859659799919
   }
}
```
Simply pass in `geom` as GeoJSON and `layer=loss` for percent and area. :D