update README

babel · Nov 16, 2019 · b1f4048 · b1f4048
1 parent 2a4eeca
commit b1f4048
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diff --git a/README.md b/README.md
@@ -30,6 +30,12 @@ If you want to run **all** the tests, run
 node lib/run-tests I_AM_SURE
 ```
 
+If you want to run against a local copy of babel repo (useful for debugging):
+
+```
+BABEL_PATH=../babel node lib/run-tests [pattern]
+```
+
 ## Download babel/babel master test262 artifact
 
 ```