docs(config): add default values

ionic/config/config.ts

@@ -54,9 +54,53 @@ import {isObject, isDefined, isFunction, isArray, extend} from '../util/util';
  * The last way we could configure is through URL query strings. This is useful for testing while in the browser.
  * Simply add `?ionic<PROPERTYNAME>=<value>` to the url.
  *
- * ```
+ * ```bash
  * http://localhost:8100/?ionicTabbarPlacement=bottom
  * ```
+ *
+ * A config value can come from anywhere and be anything, but there are a default set of values.
+ *
+ * ``` javascript
+ * // iOS
+ * activator: 'highlight',
+ * actionSheetEnter: 'action-sheet-slide-in',
+ * actionSheetLeave: 'action-sheet-slide-out',
+ * actionSheetCancelIcon: '',
+ * actionSheetDestructiveIcon: '',
+ * backButtonText: 'Back',
+ * backButtonIcon: 'ion-ios-arrow-back',
+ * iconMode: 'ios',
+ * menuType: 'reveal',
+ * modalEnter: 'modal-slide-in',
+ * modalLeave: 'modal-slide-out',
+ * pageTransition: 'ios-transition',
+ * pageTransitionDelay: 16,
+ * popupEnter: 'popup-pop-in',
+ * popupLeave: 'popup-pop-out',
+ * tabbarPlacement: 'bottom',
+
+ * // MD
+ * activator: 'ripple',
+ * actionSheetEnter: 'action-sheet-md-slide-in',
+ * actionSheetLeave: 'action-sheet-md-slide-out',
+ * actionSheetCancelIcon: 'ion-md-close',
+ * actionSheetDestructiveIcon: 'ion-md-trash',
+ * backButtonText: '',
+ * backButtonIcon: 'ion-md-arrow-back',
+ * iconMode: 'md',
+ * menuType: 'overlay',
+ * modalEnter: 'modal-md-slide-in',
+ * modalLeave: 'modal-md-slide-out',
+ * pageTransition: 'md-transition',
+ * pageTransitionDelay: 120,
+ * popupEnter: 'popup-md-pop-in',
+ * popupLeave: 'popup-md-pop-out',
+ * tabbarHighlight: true,
+ * tabbarPlacement: 'top',
+ * tabSubPages: true,
+ * ```
+ *
+ *
 **/
 export class Config {