Adding type definitions for dts-bundle

DtsBundle is for bundling type definitions to be consumed by other
libraries.

dts-bundle/dts-bundle.d.ts

@@ -0,0 +1,23 @@
+// Type definitions for dts-bundle
+// Project: https://github.com/TypeStrong/dts-bundle
+// Definitions by: Asana <https://asana.com>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+declare module "dts-bundle" {
+    interface Options {
+        name: string;
+        main: string;
+        baseDir?: string;
+        exclude?: RegExp;
+        externals?: boolean;
+        indent?: string;
+        newLine?: string;
+        out?: string;
+        prefix?: string;
+        removeSource?: boolean;
+        separator?: string;
+        verbose?: boolean;
+    }
+
+    export function bundle(opts: Options): void;
+}