Import WalletFactory instead of Wallet

WalletFactory and WalletBitkey classes
--usb parameter enables experimental support for bitkey protocol

lib/wallet_bitkey.py

@@ -0,0 +1,28 @@
+#!/usr/bin/env python
+#
+# Electrum - lightweight Bitcoin client
+# Copyright (C) 2011 thomasv@gitorious
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+import os
+
+from wallet import Wallet
+#import bitkeylib.bitkey_pb2 as proto
+
+from version import ELECTRUM_VERSION
+SEED_VERSION = 4 # Version of bitkey algorithm
+
+class WalletBitkey(Wallet):
+    pass