diff --git a/.gitignore b/.gitignore
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+# Created by .ignore support plugin (hsz.mobi)
diff --git a/README.md b/README.md
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 # tor-detector
-A library to detect if your website visitor is from a TOR network or not
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+A library to detect if your website visitor is from a TOR network or not. 
+
+At the moment this is achieved by using a DNS lookup method as described in https://trac.torproject.org/projects/tor/wiki/doc/TorDNSExitList
+
+# Credit
+Original code is taken from https://jrnv.nl/detecting-the-use-of-proxies-and-tor-network-6c240d6cc5f (it wasn't working but very close)
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