Merge pull request #6 from yohanboniface/fixes

Range Fixes
Fix patch collision
Update d3.slider.js

fix for firefox label margin issue.
Merge pull request #8 from yohanboniface/fixes

Fix patch collision
Merge pull request #9 from sumant86/patch-1

Update d3.slider.js
Added NPM and BOWER support for v0.0.1
Added slidestart event
Added div-range to single handle mode

Also added animations so you could combine div-range with
steps. Previously it would be out of sync with the handle
animation.