test_order_book AssertionError on 1btcxe

[d3brouille]

• 1btcxe returns 'ask' and 'bid' when you ask it for the order book.
• test_order_book looks for 'asks' and 'bids'

Result: the test raises an AssertionError

example output:
FAIL: test_order_book (clients.TestAPI)

Traceback (most recent call last):
File "clients.py", line 91, in test_order_book
self.assertIn('asks', raw_book)
AssertionError: 'asks' not found in {u'order-book': {u'ask': [{u'timestamp': u'1445696607', u'price': u'281.84', u'converted_from': None, u'order_value': u'200.11', u'order_amount': u'0.71000000'},