Move settings into 'config.json' file

Here's my config.json file, your should look similar (but with a different nick and password):

    {
      "channel": "#moebot",
      "reddits": [
        "awwnime+pantsu+melanime+luckyyuri+kyoaniyuri+patchuu+moescape+imouto+ZettaiRyouiki"
      ],
      "nick": "MoeBotTest",
      "password": null,
      "server": "irc.snoonet.org",
      "plugins": [
        "imgur",
        "mal",
        "pet",
        "pixiv",
        "sauce",
        "whattowatch",
        "youtube"
      ]
    }