update allcoin's load markets with new URI
update allcoin's load markets with new URI

 * old uri doesn't work anymore, always timeout error
 * web uri 'allcoin.com' sometime won't respond, but 'www.allcoin.com'
   always responds

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