-) Use private host for auth-based requests

-) Updated examples

bfxapi/examples/ws/wallet_balance.py

@@ -1,15 +1,18 @@
 import os
 import sys
 sys.path.append('../../../')
-from bfxapi import Client
+from bfxapi import Client, WS_HOST, REST_HOST
 
 API_KEY=os.getenv("BFX_KEY")
 API_SECRET=os.getenv("BFX_SECRET")
 
+# Checking wallet balances requires private hosts
 bfx = Client(
   API_KEY=API_KEY,
   API_SECRET=API_SECRET,
-  logLevel='INFO'
+  logLevel='INFO',
+  ws_host=WS_HOST,
+  rest_host=REST_HOST
 )
 
 @bfx.ws.on('wallet_snapshot')