No more ambient modules for tns-core-modules/* subpackages.

- Use path mappings in tsconfig.json to resolve module typings
- Only use ambient mobules for global API's
- Move single-file modules to a subdir with the same name so that
we can provide a hand-written typing next to it (via package.json)
- Delete all mentions of tns-core-modules.d.ts
- Delete reference d.ts assembly build steps. Not needed anymore.
- HACK! Use a <reference> for global typings in application.d.ts
to avoid publishing a separate @types/tns-core-modules package.
- Rename declarations.d.ts to tns-core-modules.d.ts to preserve
JS project mappings in references.d.ts (the only place we use those)

tns-core-modules/ui/button/button.d.ts

@@ -1,44 +1,42 @@
 /**
  * Contains the Button class, which represents a standard button widget.
  */
-declare module "ui/button" {
-    import { TextBase, EventData } from "ui/text-base";
+import { TextBase, EventData } from "ui/text-base";
+
+/**
+ * Represents a standard Button widget.
+ */
+export class Button extends TextBase {
+    /**
+     * String value used when hooking to tap event.
+     */
+    public static tapEvent: string;
 
     /**
-     * Represents a standard Button widget.
+     * Gets the native [android widget](http://developer.android.com/reference/android/widget/Button.html) that represents the user interface for this component. Valid only when running on Android OS.
      */
-    export class Button extends TextBase {
-        /**
-         * String value used when hooking to tap event.
-         */
-        public static tapEvent: string;
+    android: any /* android.widget.Button */;
 
-        /**
-         * Gets the native [android widget](http://developer.android.com/reference/android/widget/Button.html) that represents the user interface for this component. Valid only when running on Android OS.
-         */
-        android: any /* android.widget.Button */;
+    /**
+     * Gets the native [UIButton](https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIButton_Class/) that represents the user interface for this component. Valid only when running on iOS.
+     */
+    ios: any /* UIButton */;
 
-        /**
-         * Gets the native [UIButton](https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIButton_Class/) that represents the user interface for this component. Valid only when running on iOS.
-         */
-        ios: any /* UIButton */;
+    /**
+     * Gets or sets whether the Button wraps text or not.
+     */
+    textWrap: boolean;
 
-        /**
-         * Gets or sets whether the Button wraps text or not.
-         */
-        textWrap: boolean;
+    /**
+     * A basic method signature to hook an event listener (shortcut alias to the addEventListener method).
+     * @param eventNames - String corresponding to events (e.g. "propertyChange"). Optionally could be used more events separated by `,` (e.g. "propertyChange", "change"). 
+     * @param callback - Callback function which will be executed when event is raised.
+     * @param thisArg - An optional parameter which will be used as `this` context for callback execution.
+     */
+    on(eventNames: string, callback: (data: EventData) => void, thisArg?: any);
 
-        /**
-         * A basic method signature to hook an event listener (shortcut alias to the addEventListener method).
-         * @param eventNames - String corresponding to events (e.g. "propertyChange"). Optionally could be used more events separated by `,` (e.g. "propertyChange", "change"). 
-         * @param callback - Callback function which will be executed when event is raised.
-         * @param thisArg - An optional parameter which will be used as `this` context for callback execution.
-         */
-        on(eventNames: string, callback: (data: EventData) => void, thisArg?: any);
-
-        /**
-         * Raised when a tap event occurs.
-         */
-        on(event: "tap", callback: (args: EventData) => void, thisArg?: any);
-    }
-}
+    /**
+     * Raised when a tap event occurs.
+     */
+    on(event: "tap", callback: (args: EventData) => void, thisArg?: any);
+}

tns-core-modules/ui/button/package.json

@@ -1,2 +1,5 @@
-{ "name" : "button",
-  "main" : "button" }
+{
+  "name" : "button",
+  "main" : "button",
+  "types" : "button.d.ts"
+}