updated examples/py/readme [ci skip]
updated examples/py/readme [ci skip]

thijstriemstra/ccxt,ccxt/ccxt,tritoanst/ccxt,thijstriemstra/ccxt,aiueogawa/ccxt,ccxt/ccxt,aiueogawa/ccxt,thijstriemstra/ccxt,ccxt/ccxt,ccxt/ccxt,tritoanst/ccxt,tritoanst/ccxt,tritoanst/ccxt,aiueogawa/ccxt,ccxt/ccxt,thijstriemstra/ccxt,aiueogawa/ccxt