Improvements needed for Range component

[robmpreston]

1. While clicking and dragging the slider around, the value in the model should update (right now it only updates after releasing)
2. Slider should have a 'step' value i.e. min- 0, max- 100, step- 10 would go 0,10,20,30...etc

I think it would also be nice if instead of the current style, it "fills up" as you drag it, i.e. the right side of the slider is grey and the selected portion is blue

[rstoenescu]

Planning on releasing new Range component with requested functionality soon.

[rstoenescu]

Pushed commit to enhance Range component:

commit 76e9f3a
Date: Thu Aug 18 18:20:21 2016 +0300

refactor: Rewritten Range to support new features

+ "step" property
+ colored styles
+ markers
+ "snap" property
+ "label" property

Will be available in v0.5.1 in a few days.