update a few scripts

scripts/get_history

@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 
 import sys
-from electrum import Interface
+from electrum import Network
 
 try:
     addr = sys.argv[1]
@@ -9,9 +9,9 @@ except:
     print "usage: get_history <bitcoin_address>"
     sys.exit(1)
 
-i = Interface({'server':'electrum.be:50001:t'})
-i.start()
-h = i.synchronous_get([ ('blockchain.address.get_history',[addr]) ])[0]
+n = Network()
+n.start(wait=True)
+h = n.synchronous_get([ ('blockchain.address.get_history',[addr]) ])[0]
 for item in h:
     print item['tx_hash'], item['height']