ionic framework: static ionic.Platform utility

Add the static ionic.Platform utility according to the API
documentation
(http://ionicframework.com/docs/api/utility/ionic.Platform/)

ionic/ionic.d.ts

@@ -6,7 +6,89 @@
 /// <reference path="../angularjs/angular.d.ts" />
 
 interface IonicStatic {
+    /**
+     * What Ionic package version is.
+     */
     version: string;
+    Platform: {
+        /**
+        * Trigger a callback once the device is ready, or immediately
+         * if the device is already ready. This method can be run from
+         * anywhere and does not need to be wrapped by any additonal methods.
+         * When the app is within a WebView (Cordova), it’ll fire
+         * the callback once the device is ready. If the app is within
+         * a web browser, it’ll fire the callback after window.load.
+         * Please remember that Cordova features (Camera, FileSystem, etc) still
+         * will not work in a web browser.
+         */
+        ready(callback: ()=>void): void;
+        /**
+         * Set the grade of the device: ‘a’, ‘b’, or ‘c’. ‘a’ is the best
+         * (most css features enabled), ‘c’ is the worst. By default, sets the grade
+         * depending on the current device.
+         */
+        setGrade(grade: string): void;
+        /**
+         * Return the current device (given by cordova).
+         */
+        device(): any;
+        /**
+         * Check if we are running within a WebView (such as Cordova).
+         */
+        isWebView(): boolean;
+        /**
+         * Whether we are running on iPad.
+         */
+        isIPad(): boolean;
+        /**
+         * Whether we are running on iOS.
+         */
+        isIOS(): boolean;
+        /**
+         * Whether we are running on Android.
+         */
+        isAndroid(): boolean;
+        /**
+         * Whether we are running on Windows Phone.
+         */
+        isWindowsPhone(): boolean;
+        /**
+         * The name of the current platform.
+         */
+        platform(): string;
+        /**
+         * The version of the current device platform.
+         */
+        version(): number;
+        /**
+         * Exit the app.
+         */
+        exitApp(): void;
+        /**
+         * Shows or hides the device status bar (in Cordova). Requires cordova plugin add org.apache.cordova.statusbar
+         */
+        showStatusBar(shouldShow: boolean): void;
+        /**
+         * Sets whether the app is fullscreen or not (in Cordova).
+         */
+        fullScreen(showFullScreen?: boolean, showStatusBar?: boolean): void;
+        /**
+         * Whether the device is ready.
+         */
+        isReady: boolean;
+        /**
+         * Whether the device is fullscreen.
+         */
+        isFullScreen: boolean;
+        /**
+         * An array of all platforms found.
+         */
+        platforms: Array<string>;
+        /**
+         * What grade the current platform is.
+         */
+        grade: string;
+    };
 }
 
 declare var ionic: IonicStatic;