Support emojis on desc

[rata]

Hi Tim, I liked these scripts and I was using them as base for a demo of my own. I ended up adding the "-e" flag to the echo on desc() so I can print emojis.

I don't know if you want (very simple) PRs for this or not. But I thought it is better to contribute back, it is completely fine if you don't want to take PRs for this :)

The other thing I ended up doing for my demos is adding a "desc_type", that just adds the comment typing them slowly instead of instantly as "desc" does. You can see my branch here, just in case.

Below is the commit msg of the commit in this PR.

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With this commit, you can print an emoji using its unicode, like:

# tada emoji
desc "\U1F389"

[rata]

Oh, no one assigned, so tagging you just in case @thockin

[thockin]

thanks!

Github has no way to auto-assign, and I miss things that are not assigned, sometimes.