Unable to use ForkDeltaClient

[dilkushp]

Code:
client = etherdelta.ForkDeltaClient()
token_addr = '0x0d8775f648430679a709e98d2b0cb6250d2887ef'
orders = client.get_buy_orderbook(token_addr)
print(orders)

However this gives error:
Traceback (most recent call last):
File "c:/FunProjects/Crypto/A_ForkDelta - Copy.py", line 33, in
client = etherdelta.ForkDeltaClient()
AttributeError: module 'etherdelta' has no attribute 'ForkDeltaClient'