format README, user friendly print

crypto/aes/README

@@ -6,6 +6,8 @@ How to use aes-file-encrypt.c
 
         ./aes-file-encrypt <-option> <KeySize> <input.file> <output.file>
 
+        KeySize examples: 128, 192, 256
+
     typing -e for option will encrypt the input.file onto the output.file.
     typing -d for option will decrypt the input.file onto the output.file.
         NOTE: When decrypting make sure the key is the same used for the

crypto/aes/aes-file-encrypt.c

@@ -251,7 +251,7 @@ int NoEcho(char* key, int size)
         return -1060;
     }
 
-    printf("Key: ");
+    printf("Unique Password: ");
     fgets(key, size, stdin);
     key[strlen(key) - 1] = 0;