Update README.md
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 ## Building the plugin
 
-Install Bazel, then run 'bazel build //ijwb:ijwb_bazel' from
-the project root. This will create a plugin jar in
-'bazel-genfiles/ijwb/ijwb_bazel.jar'.
\ No newline at end of file
+Install Bazel, then run 'bazel build //ijwb:ijwb_bazel --define=ij_product=intellij-latest'
+from the project root. This will create a plugin jar in
+'bazel-genfiles/ijwb/ijwb_bazel.jar'.