Removed orderList from the TradeAPI class, as the method is no longer supported on the exchange server.
Updated sample code to use activeOrders instead of orderList.
Display "no orders" if there are no open orders in the print-account-info sample.
Fixes #27.
Updated documentation to match current code.
Fixes #23.
Clarified getTradeFee docstring.
Removed outdated secret and nonce parameters from TradeAPI.__init__.
Fixed reference to deprecated orderList method in OrderItem docstring.
Added __getstate__ and __setstate__ to classes with __slots__ so they can be pickled.
Merge pull request #1 from alanmcintyre/master

Update from master