Reactions for issues

[settinghead]

https://developer.github.com/changes/2016-05-12-reactions-api-preview/

[jjl]

Hello,

My fork includes the first attempt at this (GET only): irresponsible/tentacles.

It's on clojars if you want to have a go. More details here: https://groups.google.com/forum/#!topic/clojure/UJetyHj-BPE