Added #187 exposed SHA3Hasher and NACL classes

Author: rg911

src/core/crypto/index.ts

@@ -1,4 +1,5 @@
 /*
+import { SHA3Hasher } from './SHA3Hasher';
  * Copyright 2019 NEM
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
@@ -16,3 +17,5 @@
 
 export * from './Crypto';
 export * from './KeyPair';
+export * from './SHA3Hasher';
+export * from './nacl_catapult';