Merge pull request vnpy#229 from sunnycomes/master

方法名写错了，已改qryAccont->qryAccount

vn.trader/vtServer.py

@@ -30,7 +30,7 @@ def __init__(self, repAddress, pubAddress):
         self.register(self.engine.subscribe)
         self.register(self.engine.sendOrder)
         self.register(self.engine.cancelOrder)
-        self.register(self.engine.qryAccont)
+        self.register(self.engine.qryAccount)
         self.register(self.engine.qryPosition)
         self.register(self.engine.exit)
         self.register(self.engine.writeLog)