Output better gif responses to slack

• upvote: upvote the most recently posted gif to that channel, giving it a higher chance of showing up in the future. Ex: ‘/reactif upvote’

• downvote: downvote the most recently posted gif to that channel, giving it a lower chance of showing up in the future. Ex: ‘/reactif downvote’

REDIS_URL = <your redis url> (using this format: “redis:https://127.0.0.1:6379”)

You can send get requests directly to your dev box to have it send to your slack channel via the following:

<dev box url>/search/slack?text=<search text query>&team_domain=<team domain>&channel_name=<channel to test>&user_name=<test username>