Added type definitions for dragscroll

dragscroll/dragscroll-tests.ts

@@ -0,0 +1,3 @@
+import dragscroll from "dragscroll";
+
+dragscroll.reset();

dragscroll/dragscroll.d.ts

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+// Type definitions for dragscroll v 0.0.8
+// Project: https://github.com/asvd/dragscroll
+// Definitions by: Sean Kelly <https://github.com/spkellydev/>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+declare module "dragscroll" {
+  function reset(i?: number, el?: HTMLElement[]): void
+}