Autoload instructions should mention alternate path for XDG directories

[craSH]

In the README section for 2. Download wee_slack.py to ~/.weechat/python, the title and body should mention that if the user's weechat installation is using XDG directories, the destination directory would be /home/crash/.local/share/weechat/python (and /home/crash/.local/share/weechat/python/autoload)

Reference from Weechat's documentation on these paths: https://weechat.org/files/doc/stable/weechat_user.en.html#xdg_directories

XDG paths are used in current Arch linux packages for WeeChat (3.2-1)

[mhite]

Ran into this issue on Ubuntu 18.04.

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 18.04.6 LTS
Release:        18.04
Codename:       bionic

[el-iot]

I encountered this issue as well: would be great if this information was available in the README! Thanks for the fix!

[hut8]

Also happens if you install from their Debian/Ubuntu repos on seemingly all versions (including Focal)