fix(floor label): Fix the floor label that was not being shown.

This has been broken by previous commit that adds the RTL support.

Author: ValentinH

dist/rzslider.css

@@ -1,7 +1,7 @@
 /*! angularjs-slider - v2.9.0 - 
  (c) Rafal Zajac <[email protected]>, Valentin Hervieu <[email protected]>, Jussi Saarivirta <[email protected]>, Angelin Sirbu <[email protected]> - 
  https://github.com/angular-slider/angularjs-slider - 
- 2016-02-28 */
+ 2016-02-29 */
 rzslider {
   position: relative;
   display: inline-block;