remove node_modules and .gitignore them

node_modules/@aws-crypto/ie11-detection/src/KeyOperation.ts

@@ -1,13 +0,0 @@
-import { Key } from "./Key";
-
-/**
- * Represents the return of a key-related operation that may or may not have
- * been completed.
- *
- * @see https://msdn.microsoft.com/en-us/library/dn302314(v=vs.85).aspx
- */
-export interface KeyOperation {
-  oncomplete: (event: Event) => void;
-  onerror: (event: Event) => void;
-  readonly result: Key | undefined;
-}