Update README.md

Author: ArnauPrat

README.md

@@ -18,7 +18,7 @@ ldbc_snb_datagen is GPLv3 licensed, to see detailed information about this licen
 
 **Datasets**
 
-Publicly available datasets can be found at the LDBC-SNB Amazon Bucket. These datasets are the official SNB datasets and were generated using version 0.2.6. They are available in the three official supported serializers: CSV, CSVMergeForeign and TTL. The bucket is configured in "Requester Pays" mode. 
+Publicly available datasets can be found at the LDBC-SNB Amazon Bucket. These datasets are the official SNB datasets and were generated using version 0.2.6. They are available in the three official supported serializers: CSV, CSVMergeForeign and TTL. The bucket is configured in "Requester Pays" mode, thus in order to access them you need a properly set up AWS client.
 * http://ldbc-snb.s3.amazonaws.com/
 
 **Community provided tools**