Update README.md

Author: mravanelli

benchmarks/MOABB/README.md

@@ -14,6 +14,9 @@ We accompany our code with a benchmark on 9 MOABB datasets (for MI-based, P300-b
 Moreover, we also report the main results on the key aspects characterizing the decoding protocol we propose for enabling trustworthy EEG decoding.
 
 For detailed information, please refer to [The link to the official paper will be available soon].
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+**Important:** This tool requires a Linux environment to run properly.
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 # Table of Contents