update code to match rearranged source tree

bin/receive_text.py

@@ -1,6 +1,6 @@
 from __future__ import print_function
 import time, json
-from wormhole.transcribe import Receiver
+from wormhole.blocking.transcribe import Receiver
 from wormhole.codes import input_code_with_completion
 
 APPID = "lothar.com/wormhole/text-xfer"

bin/send_text.py

@@ -1,6 +1,6 @@
 from __future__ import print_function
 import sys, json
-from wormhole.transcribe import Initiator
+from wormhole.blocking.transcribe import Initiator
 
 APPID = "lothar.com/wormhole/text-xfer"
 

src/wormhole/blocking/transcribe.py

@@ -3,9 +3,9 @@ from binascii import hexlify, unhexlify
 from spake2 import SPAKE2_A, SPAKE2_B
 from nacl.secret import SecretBox
 from nacl import utils
-from . import codes
-from .hkdf import HKDF
-from .const import RELAY
+from .. import codes
+from ..util.hkdf import HKDF
+from ..const import RELAY
 
 SECOND = 1
 MINUTE = 60*SECOND