Fix for issue # 250 - How can I use 'fetch_order_book' and pass optional params?
Fix for issue # 250 - How can I use 'fetch_order_book' and pass optional params?

ccxt/ccxt,ccxt/ccxt,tritoanst/ccxt,ccxt/ccxt,tritoanst/ccxt,ccxt/ccxt,ccxt/ccxt,tritoanst/ccxt,tritoanst/ccxt