feat(ScrollCollapse): change default debounce time to 0ms

BREAKING CHANGE: Set default debounce time to 0ms

Author: edoparearyee

README.md

@@ -129,7 +129,7 @@ In this scenario the nav element will have the class `sn-minimise` added when th
 }
 ```
 
-### Specify debounce time (default: 100ms)
+### Specify debounce time (default: 0ms)
 
 ```html
 <header class="foo" snScrollCollapse [debounce]="500">

src/app/app.component.html

@@ -1,11 +1,11 @@
 <h1>Scroll down ↓</h1>
-<nav class="nav" snScrollCollapse [debounce]="0">
+<nav class="nav" snScrollCollapse>
   My nav&nbsp;
   <span class="down">Going down</span>
   <span class="up">Going up</span>
 </nav>
 <div class="spacer"></div>
-<div class="bar" snScrollCollapse [debounce]="0">
+<div class="bar" snScrollCollapse>
   Sticky when scrolled passed
 </div>
 <div class="spacer"></div>

src/app/scroll-collapse/scroll-collapse.directive.ts

@@ -80,11 +80,11 @@ export class ScrollCollapseDirective implements AfterViewInit, OnDestroy {
    * before running event handler
    *
    * @type {number}
-   * @default 100
+   * @default 0
    * @memberof ScrollCollapseDirective
    */
   @Input()
-  public debounce = 100;
+  public debounce = 0;
   /**
    * Returns true if last scroll direction is UP
    *