add -c option to readme

Signed-off-by: Matteo Collina <hello@matteocollina.com>
mcollina · Mar 13, 2024 · a5dff7d · a5dff7d
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commit a5dff7d
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diff --git a/README.md b/README.md
@@ -85,6 +85,7 @@ Note the use of `incremental: true`, which speed up compilation massively.
 
 ## Options
 
+* `--concurrency` or `-c`, to set the number of concurrent tests. Defaults to the number of available CPUs minus one.
 * `--coverage` or `-C`, enables code coverage
 * `--only` or `-o`, only run `node:test` with the `only` option set  
 * `--watch` or `-w`, re-run tests on changes