Merge pull request seiyria#129 from makzee/master

Adding support for AMD & CommonJS.

Author: seiyria

slider.js

@@ -1,3 +1,13 @@
+(function(factory) {
+    if (typeof define === 'function' && define.amd) {
+        define(['angular', 'bootstrapSlider'], factory);
+    } else if (typeof module === 'object' && module.exports) {
+        module.exports = factory(require('angular'), require('bootstrapSlider'));
+    } else if (window) {
+        factory(window.angular, window.Slider);
+    }
+})(function (angular, Slider) {
+
 angular.module('ui.bootstrap-slider', [])
     .directive('slider', ['$parse', '$timeout', '$rootScope', function ($parse, $timeout, $rootScope) {
         return {
@@ -219,3 +229,4 @@ angular.module('ui.bootstrap-slider', [])
         };
     }])
 ;
+});