dialogs module added with alert implementation for iOS

ui/dialogs/dialogs.d.ts

@@ -0,0 +1,47 @@
+declare module "dialogs" {
+    import promises = require("promises");
+    /**
+    * The alert() method displays an alert box with a specified message.
+    * @param message Specifies the text to display in the alert box.
+    */
+    function alert(message: string): promises.Promise<any>;
+
+    /**
+    * The alert() method displays an alert box with a specified options.
+    * @param options Specifies the options for the alert box.
+    */
+    function alert(options: AlertOptions): promises.Promise<any>;
+
+    /**
+    * The confirm() method displays a dialog box with a specified message, along with an OK and a Cancel button.
+    * @param message Specifies the text to display in the confirm box.
+    */
+    function confirm(message: string): void;
+
+    /**
+    * The prompt() method displays a dialog box that prompts the visitor for input.
+    * @param text The text to display in the dialog box.
+    * @param defaultText The default input value.
+    */
+    function prompt(text: string, defaultText?: string): void;
+
+    /**
+    * Provides options for the alert.
+    */
+    interface AlertOptions {
+        /**
+          * Gets or sets the alert message.
+          */
+        message: string;
+
+        /**
+          * Gets or sets the alert message.
+          */
+        title?: string;
+
+        /**
+          * Gets or sets the request headers in JSON format.
+          */
+        buttonName?: any;
+    }
+}