Update README.md

README.md

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 # Swedish postcodes and their coordinates
 
+
 This data is a list of address coordinates along with the address postcode. The data has been extracted from the dataset [Belägenhetsadress Nedladdning, vektor](https://geotorget.lantmateriet.se/geodataprodukter/belagenhetsadress-nedladdning-vektor-api) from the APIs of the Swedish mapping, cadastral and land registration authority (*Lantmäteriet).
-All other metadata has been removed.
+All other metadata has been removed. If you reuse it, you need to mention that it comes from Lantmäteriet, to comply with the original license (CC-BY 4.0).
 
 Thanks to the EU High Value Datasets directive and despite the resistance of Swedish government agencies, this data is now available free of charge, albeit with a few hurdles.
-It can hopefully lead to the end of the monopoly of [Postnummerservice Norden AB](https://postnummerservice.se). Postnord gave exclusive rights to sell postcode data to this private company back in 2005.
+It can hopefully lead to the end of the monopoly of [Postnummerservice Norden AB](https://postnummerservice.se). Postnord gave exclusive rights to sell postcode data to this private company back in 2005.
+
+This dataset is in no way meant to replace the extensive set of APIs offered by Postnummerservice today. It is merely a sneak peek at what can be found in the data freely available since last week.