Update README file in c_baremetal directory

c_baremetal/AES/aes.c

 /*
- * aes.c
- *
- *  Created on: Jul 9, 2018
- *      Author: dbviet
- */
-
-
-/*
 This is an implementation of the AES algorithm, specifically ECB, CTR and CBC mode.
 Block size can be chosen in aes.h - available choices are AES128, AES192, AES256.
 The implementation is verified against the test vectors in:

c_baremetal/README

@@ -32,42 +32,40 @@ List of source code and their description:
 
 ./platform.h
 ./platform.c
-    Viet
+    Initialize UART and enable caches.
 
-./API.h
-
-./encrypt.c
 ./NTRUEncrypt.h
 ./NTRUEncrypt.c
-    Viet
+    Modified to use either software or hardware multiplier.
 
-./poly.h
-./poly.c
 ./poly_rot.c
 ./poly_rot.h
-    Viet
-
-./packing.h
-./packing.c
-    Viet
-
-./param.h
-./param.c
-    NTRUEncrypt parameters definition.
+    Provides supporting functions for hardware multiplier.
 
 ./AES/aes.h
 ./AES/aes.c
+	Standalone AES implementation.
+	
 ./rng.h
 ./rng.c
-./fastrandombytes.h
-./fastrandombytes.c
-./crypto_hash_sha512.h
-./crypto_hash_sha512.c
-    Viet
+    Modified to use standalone AES implementation instead of AES implementation in OpenSSL
+
+./Original/api.h
+./Original/encrypt.c
+./Original/poly.h
+./Original/poly.c
+./Original/packing.h
+./Original/packing.c
+./Original/param.h
+./Original/param.c
+./Original/fastrandombytes.h
+./Original/fastrandombytes.c
+./Original/crypto_hash_sha512.h
+./Original/crypto_hash_sha512.c
+./Original/shred.h
+./Original/shred.c
+./Original/crypto_stream_salsa20.h
+./Original/crypto_stream.c
+	Original files from NIST PQC Round 1 submission NTRUEncrypt. 
 
-./crypto_stream_salsa20.h
-./crypto_stream.c
-    Viet
 
-./shred.h
-./shred.c