Renaming range from-to model used with the direct hash declared on contr...

Renaming range from-to model used with the direct hash declared on controller. This way you can control sliders from outside DOM elements.

Use example: Controlling sliders from outside DOM elements such as text inputs. This way you can set up two inputs, one for the min value and another for the max value, setting as ng-models "range.min" and "range.max" respectively.