Introduction to WABT

[dschuff]

Introduces the name change from "sexpr-wasm-prototype" to WABT in
README.md but does not yet change all the URL references or code
references.

[dschuff]

I figured it'd be better to wait to change the code until after 0xc lands, and change URL references until we change the repo name (presumably we do want to do that?)

[dschuff]

(oh also you'll notice that I'm proposing that WABT be the way we spell the name in text, rather than "wabbit").

[dschuff]

Implements part of #101

[sbc100]

I like the spelling.

[binji]

lgtm, I guess I figured it would be fine to rename the repo first, because GH automatically redirects anyway. But we can wait and do it after 0xc lands instead.

[dschuff]

Oh, I didn't realize that GH will redirect the URLs. I guess it doesn't really matter. Anyway this is pretty independent and can go in whenever. Is renaming the repo something that you can do? Or do we have to get one of the admins to do it?

[dschuff]

wrt 0xc I was mostly concerned about conflicts in the code but there's actually not mention of sexpr-anything in there anyway. So yeah let's just rename the repo and I'll update the rest of README.md in this PR.

[binji]

Pretty sure it redirects... maybe? :)
And yeah, I can't rename but I think @s3ththompson can.

[s3ththompson]

Yes repo URLs as well as git requests all redirect from previous location. Let me know explicitly whenever you're ready to change and I'll rename!

(As an aside, I have a minor preference for keeping wabt lowercase in (just) the repo name given GitHub naming trends, but that's a minor detail)

[dschuff]

I'm ready whenever @binji is :) lowercase wabt is fine for the repo name.

[binji]

Yep, ready whenever. Shouldn't break anything. fingers crossed

[s3ththompson]

Done! Added some next steps in #101