Added TS stubs for clone library.

clone/clone-tests.ts

@@ -0,0 +1,9 @@
+import clone = require("clone");
+
+var original = {
+    key: "value"
+};
+
+var copy = clone(original);
+copy = clone(original, false);
+copy = clone(original, true);

clone/clone.d.ts

@@ -0,0 +1,17 @@
+// Type definitions for clone 0.1.11
+// Project: https://github.com/pvorb/node-clone
+// Definitions by: Kieran Simpson <https://github.com/kierans/DefinitelyTyped>
+// Definitions: https://github.com/borisyankov/DefinitelyTyped
+
+/**
+ * See clone JS source for API docs
+ */
+declare module "clone" {
+    /**
+     * @param parent
+     * @param circular If not given, defaults to true in JS lib.
+     */
+    function clone(parent: Object, circular?: boolean): Object
+
+    export = clone
+}