Update README.md

README.md

@@ -9,3 +9,5 @@ and selection-specific algorithms are mostly defined in the
 
 Information on contributing to Moore is given in the [CONTRIBUTING
 file](CONTRIBUTING.md).
+
+Documentation can be found [here](https://lhcbdoc.web.cern.ch/lhcbdoc/moore/master/index.html).