constructing the post request for tumblr
revving hubot
back out hubot - halt upgrade on hubot-scripts
followers method call for tumblr to debug oauth

Oauth is a pain. The followers method is idempotent and safe, so a
perfect candidate to debug the oauth interactions to tumblr.

* oauth signature creation
* hmac wrapper
* uriencode wrapper

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extract function refactor

WIP: refactor

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merged a bunch of WIP