added a link to https://medium.com/@kennychuaio/experiments-creating-a-crypto-twitter-bot-to-announce-newly-listed-cryptocoins-9cd23930f5cb to examples/README.md
added a link to https://medium.com/@kennychuaio/experiments-creating-a-crypto-twitter-bot-to-announce-newly-listed-cryptocoins-9cd23930f5cb to examples/README.md

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