Counts word on a webpage using Block on PubNub

Demo: https://64bit.github.io/word-count-pubnub/

          |
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(channel:wordcount)
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[Event Handler: download_url.js ] 
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  (channel:page) 
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 [Event Handler: split_page.js ] 
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  (channel:words) 
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[Event Handler: word_counter.js ] 
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(channel:counted-words)
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         \|/
       

Notes:

• download_url.js publishes only 15000 characters of downloaded page as PubNub payload limit is 32K. The page is published as string and will have escaped characters making it bigger than 15K characters
• download_url.js doesn't seem to handle 30X responses, for example http://www.google.com won't work because it redirects to https. Similarly https://www.twitter.com doesn't work because it redirects to https://twitter.com
• split_page.js splits on any character which is not digit or alphabet, using regex: /[^A-Za-z0-9]/