Set an environment variable for your slack token, update the token name here
slack_token := os.Getenv("YOUR_SLACK_TOKEN_HERE")
And you are good to go. Then build and run the bot.go file, create a bot in your slack team Add the bot to a channel, type a message and send it to the channel:
@bot_name weather location_name
It'll sends message back to the channel containing weather info for the particular location. Let me know if you found something wrong or wanna update it you are welcome.