Added the bare-minimum .d.ts file for Typescript Interoperability

dist/phaser.plugin.isometric.d.ts

@@ -0,0 +1,16 @@
+declare module Phaser.Plugin {
+	class Isometric extends Phaser.Plugin {
+		projector: Phaser.Plugin.Isometric.Projector;
+
+		constructor(game: Phaser.Game, parent: any);
+
+		addIsoSprite(x: number, y: number, z: number, key?: any, frame?: any, group?: Phaser.Group): Phaser.Sprite;
+	}
+
+	module Isometric {
+		class Projector {
+			anchor: Phaser.Point;
+		}
+	}
+
+}