Added CPU instruction for README (#3225)

Since the change itself is quite straight-forward, I'll just describe
the context. Tried using automatic installer on my laptop, kept erroring
out on line 140-something of installer.py, "ERROR: Can not perform a
'--user' install. User site-packages are not visible in this
virtualenv."
Got tired of of fighting with pip so moved on to command line install.
Worked immediately, but at the time lacked instruction for CPU, so
instead of opening any helpful hyperlinks in the readme, took a few
minutes to grab the link from installer.py - thus this pr.
This commit is contained in:
Lincoln Stein 2023-04-18 19:07:37 -04:00 committed by GitHub
commit 4824237a98
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@ -148,6 +148,11 @@ not supported.
pip install InvokeAI --use-pep517 --extra-index-url https://download.pytorch.org/whl/rocm5.4.2
```
_For non-GPU systems:_
```terminal
pip install InvokeAI --use-pep517 --extra-index-url https://download.pytorch.org/whl/cpu
```
_For Macintoshes, either Intel or M1/M2:_
```sh