new binance doc link

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added missing DDoSProtection import

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PEP8 conformance

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Fixing plus operator which caused OHLCV failue

Fixes issue with passing in a "since" timestamp will cause the request "end" to look like
    [id] => BTC-USD
    [granularity] => 60
    [start] => 2017-12-23T18:50:59.000+00:00
    [end] => 57041747-04-17T02:50:59.000+00:00

Which throws this error
ccxt\ExchangeError: gdax {"message":"Invalid interval"}

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1.10.457

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fixed GDAX withdraw fees https://support.gdax.com/customer/en/portal/…

…articles/2425097-what-are-the-fees-on-gdax-

added BCH to GDAX https://support.gdax.com/customer/en/portal/articles/2911310-bitcoin-cash-faq?b_id=13522

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1.10.455

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minor edit

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added path resolving to examples/js/cli.js

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Update ISSUE_TEMPLATE.md

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