modified:   README.md
	deleted:    chat_server.py
	modified:   client.py
	deleted:    client_gencert.py
	deleted:    encrypt_message.py
	deleted:    reqrep_client.py
	renamed:    reqrep_server.py -> server.py
	deleted:    server_gencert.py
	deleted:    test_decrypt_message.py
	deleted:    test_encrypt_message.py
	deleted:    test_message.py