feat($ionicSlideBoxDelegate): add speed parameter to next()/previous()

Closes #3493.

Author: ajoslin

Diff for: js/angular/service/slideBoxDelegate.js

@@ -48,7 +48,7 @@ IonicModule
    * @ngdoc method
    * @name $ionicSlideBoxDelegate#slide
    * @param {number} to The index to slide to.
-   * @param {number=} speed The number of milliseconds for the change to take.
+   * @param {number=} speed The number of milliseconds the change should take.
    */
   'slide',
   'select',
@@ -62,12 +62,14 @@ IonicModule
   /**
    * @ngdoc method
    * @name $ionicSlideBoxDelegate#previous
+   * @param {number=} speed The number of milliseconds the change should take.
    * @description Go to the previous slide. Wraps around if at the beginning.
    */
   'previous',
   /**
    * @ngdoc method
    * @name $ionicSlideBoxDelegate#next
+   * @param {number=} speed The number of milliseconds the change should take.
    * @description Go to the next slide. Wraps around if at the end.
    */
   'next',

Diff for: js/views/sliderView.js

@@ -93,17 +93,17 @@ ionic.views.Slider = ionic.views.View.inherit({
       options.slidesChanged && options.slidesChanged();
     }
 
-    function prev() {
+    function prev(slideSpeed) {
 
-      if (options.continuous) slide(index-1);
-      else if (index) slide(index-1);
+      if (options.continuous) slide(index-1, slideSpeed);
+      else if (index) slide(index-1, slideSpeed);
 
     }
 
-    function next() {
+    function next(slideSpeed) {
 
-      if (options.continuous) slide(index+1);
-      else if (index < slides.length - 1) slide(index+1);
+      if (options.continuous) slide(index+1, slideSpeed);
+      else if (index < slides.length - 1) slide(index+1, slideSpeed);
 
     }