Update client to the latest version of Threat Stack V2 Api.#6

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rpless wants to merge 3 commits intogetoutreach:masterfrom

threatstack:v2-updates

Commits on Jan 15, 2018

Update client to the latest version of Threat Stack V2 Api.
rpless
committed

Commits on Aug 9, 2018

Remove reference to 'API_TOKEN' in the readme
rpless
committed
Remove the hash constructor syntax from the old version of the client and use arguments instead
rpless
committed