Add troubleshooting info to README
diff --git a/README.md b/README.md
index cb1e408..1503214 100644
--- a/README.md
+++ b/README.md
@@ -94,6 +94,12 @@
- Checks out the __asf-site__ branch, and
- Copies the website files to their deployment directories.
+**HEADS-UP**
+The `gradlew publish` command *does not* update the `css` and `stylesheets` directories. If you made format changes there, you must manually merge the new versions of those files from the __master__ branch.
+
+ - While still on the __master__ branch, save those files to a location outside the geode-site repo.
+ - After running the `gradlew publish` command, copy the new versions to the appropriate directories in the __asf-site__ branch.
+
### 2. Add a new user guide
