docs: fix doc tags

ionic/components/action-menu/action-menu.ts

@@ -17,12 +17,12 @@ import * as util from 'ionic/util';
 
 /**
  * @name ActionMenu
- * @classdesc
+ * @description
  * The Action Menu is a slide-up pane that lets the user choose from a set of options. Dangerous options are made obvious.
  *
  * There are easy ways to cancel out of the action sheet, such as tapping the backdrop or even hitting escape on the keyboard for desktop testing.
  *
- * @example
+ * @usage
  * ```ts
  * openMenu() {
  *

ionic/components/checkbox/checkbox.ts

@@ -14,12 +14,12 @@ import {TapClick} from '../button/button';
 
 /**
  * @name ionCheckbox
- * @classdesc
+ * @description
  * The checkbox is no different than the HTML checkbox input, except it's styled differently
  *
  * See the [Angular 2 Docs](https://angular.io/docs/js/latest/api/forms/) for more info on forms and input.
  *
- * @example
+ * @usage
  * ```html
  * <ion-checkbox checked="true" value="isChecked" ng-control="htmlCtrl">
  *   HTML5

ionic/components/content/content.ts

@@ -8,7 +8,7 @@ import {hasFocusedTextInput} from '../../util/dom';
 
 /**
  * @name ionContent
- * @classdesc
+ * @description
  * TODO
  *
  */

ionic/components/item/item-swipe-buttons.ts

@@ -5,10 +5,10 @@ import {SlideGesture} from 'ionic/gestures/slide-gesture';
 
 /**
  * @name ionPrimarySwipeButtons
- * @classdesc
+ * @description
  * Creates a swipeable button inside a list item, that is visible when the item is swiped to the left by the user. Swiped open buttons can be hidden with `setOpen(false)`.
  *
- * @example
+ * @usage
  * TODO
  */
 @Directive({

ionic/components/item/item.ts

@@ -6,11 +6,11 @@ import {dom} from 'ionic/util';
 
 /**
  * @name ionItem
- * @classdesc
+ * @description
  * Creates a list-item that can easily be swiped,
  * deleted, reordered, edited, and more.
  *
- * @example
+ * @usage
  * ```html
  * <ion-list>
  *   <ion-item *ng-for="#item of items" (^click)="itemTapped($event, item)">

ionic/components/list/list.ts

@@ -8,7 +8,7 @@ import * as util from 'ionic/util';
 
 /**
  * @name ionList
- * @classdesc
+ * @description
  * The List is a widely used interface element in almost any mobile app, and can include
  * content ranging from basic text all the way to buttons, toggles, icons, and thumbnails.
  *

ionic/components/modal/modal.ts

@@ -6,10 +6,10 @@ import * as util from 'ionic/util';
 
 /**
  * @name ionModal
- * @classdesc
+ * @description
  * The Modal is a content pane that can go over the user's main view temporarily. Usually used for making a choice or editing an item.
  *
- * @example
+ * @usage
  * ```ts
  * class MyApp {
  * 

ionic/components/popup/popup.ts

@@ -8,12 +8,12 @@ import * as util from 'ionic/util';
 
 /**
  * @name ionPopup
- * @classdesc
+ * @description
  * The Ionic Popup service allows programmatically creating and showing popup windows that require the user to respond in order to continue.
  *
  * The popup system has support for more flexible versions of the built in `alert()`, `prompt()`, and `confirm()` functions that users are used to, in addition to allowing popups with completely custom content and look.
  *
- * @example
+ * @usage
  * ```ts
  * class myApp {
  * 

ionic/components/radio/radio.ts

@@ -9,7 +9,7 @@ import {ListHeader} from '../list/list';
 
 /**
  * @name ionRadioGroup
- * @classdesc
+ * @description
  * A radio group is a group of radio components.
  * 
  * Selecting a radio button in the group unselects all others in the group.
@@ -18,7 +18,7 @@ import {ListHeader} from '../list/list';
  *
  * See the [Angular 2 Docs](https://angular.io/docs/js/latest/api/forms/) for more info on forms and input.
  * 
- * @example
+ * @usage
  * ```html
  * <ion-radio-group ng-control="clientside">
  * 
@@ -152,12 +152,12 @@ export class RadioGroup extends Ion {
 
 /**
  * @name ionRadio
- * @classdesc
+ * @description
  * A single radio component. 
  *
  * See the [Angular 2 Docs](https://angular.io/docs/js/latest/api/forms/) for more info on forms and input.
  *
- * @example
+ * @usage
  * ```html
  * <ion-radio value="isChecked" checked="true">
  *   Radio Label

ionic/components/scroll/pull-to-refresh.ts

@@ -7,20 +7,18 @@ import {raf, ready, CSS} from 'ionic/util/dom';
 
 /**
  * @name ionRefresher
- * @classdesc
+ * @description
  * Allows you to add pull-to-refresh to an ionContent component.
  *
  * Place it as the first child of your ionContent or ionScroll element.
  *
  * When refreshing is complete, call `refresher.complete()` from your controller.
  * 
- *  @example
- *  ```html
- *  <ion-refresher (starting)="doStarting()" (refresh)="doRefresh($event, refresher)" (pulling)="doPulling($event, amt)">
- *  ```
- *
- *  @example
+ *  @usage
  *  ```ts
+ *  <ion-refresher (starting)="doStarting()" (refresh)="doRefresh($event, refresher)" (pulling)="doPulling($event, amt)">
+ *  
+ *
  *  doRefresh(refresher) {
  *    console.log('Refreshing!', refresher);
  *  

ionic/components/switch/switch.ts

@@ -48,23 +48,21 @@ class MediaSwitch {
 
 /**
  * @name ionSwitch
- * @classdesc
+ * @description
  * A switch technically is the same thing as an HTML checkbox input, except it looks different and is easier to use on a touch device. Ionic prefers to wrap the checkbox input with the <label> in order to make the entire toggle easy to tap or drag.
  *
  * Toggles can also have colors assigned to them, by adding the `toggle-assertive` attribute to assign the assertive color.
  *
  * See the [Angular 2 Docs](https://angular.io/docs/js/latest/api/forms/) for more info on forms and input.
  *
- * @example
+ * @usage
  * ```html
+ * // Create a single switch
  *  <ion-switch checked="true">
  *    Pineapple
  *  </ion-switch>
- * ````
  *
- * @example
- * Create a list of switch components:
- * ```html
+ * // Create a list of switches:
  *  <ion-list>
  *
  *    <ion-switch checked="true">

ionic/components/tabs/tab.ts

@@ -8,10 +8,10 @@ import {Tabs} from './tabs';
 /**
  * @name ionTab
  * @requires ionTabs
- * @classdesc
+ * @description
  * Contains a tab's content. The content only exists while the given tab is selected.
  *
- * @example
+ * @usage
  * ```html
  * <ion-tab tab-title="Heart" tab-icon="ion-ios-heart-outline" [root]="root1"></ion-tab>
  * ```

ionic/components/tabs/tabs.ts

@@ -7,7 +7,7 @@ import {IonicComponent, IonicView} from '../../config/annotations';
 
   /**
    * @name ionTabs
-   * @classdesc
+   * @description
    * Powers a multi-tabbed interface with a Tab Bar and a set of "pages" that can be tabbed through.
    *
    * Assign any tabs attribute to the element to define its look and feel.
@@ -16,7 +16,7 @@ import {IonicComponent, IonicView} from '../../config/annotations';
    *
    * See the ionTab component's documentation for more details on individual tabs.
    *
-   * @example
+   * @usage
    * ```html
    * <ion-tabs>
    *   <ion-tab tab-title="Heart" tab-icon="ion-ios-heart-outline" [root]="root1"></ion-tab>