docs(native-page-transitions): improve docs

closes #1294

src/@ionic-native/plugins/native-page-transitions/index.ts

@@ -29,6 +29,10 @@ export interface NativeTransitionOptions {
  *
  * ...
  *
+ *
+ * // example of adding a transition when a page/modal closes
+ * ionViewWillLeave() {
+ *
  *  let options: NativeTransitionOptions = {
  *     direction: 'up',
  *     duration: 500,
@@ -36,7 +40,6 @@ export interface NativeTransitionOptions {
  *     slidePixels: 20,
  *     iosdelay: 100,
  *     androiddelay: 150,
- *    winphonedelay: 250,
  *     fixedPixelsTop: 0,
  *     fixedPixelsBottom: 60
  *    };
@@ -45,6 +48,17 @@ export interface NativeTransitionOptions {
  *    .then(onSuccess)
  *    .catch(onError);
  *
+ * }
+ *
+ *
+ * // example of adding a transition when pushing a new page
+ * openPage(page: any) {
+ *
+ *   this.nativePageTransitions.slide(options);
+ *   this.navCtrl.push(page);
+ *
+ * }
+ *
  * ```
  */
 @Plugin({