Update of documentation

README.md

@@ -56,3 +56,7 @@ cube_stat -r <name_of_routine> -p <path_to_cube_file>
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 Here the first invocation returns the default metric, i.e. time, while the second invocation returns the ``PAPI_L1_DCM`` counter measurement. In the third example the execution time for a specific routine is returned.
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+For further information consult the Scalasca **Quick Reference** or **User Guide**, which you find on the [Scalasca 2.x documentation page](https://www.scalasca.org/scalasca/software/scalasca-2.x/documentation.html)
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