Allow insert of xslt processing instruction within result report

As NUnit creates a xml result report, many of us might transform the results to a human readable html file using a xslt file. In order to transform such xml result file on-the-fly, usually a processing instruction will be recognized by browsers, transforming the xml content on-the-fly to html. This will look like this:

<?xml version="1.0" encoding="utf-8"?>
<?xml-stylesheet type="text/xsl" href="nunit-report.xsl"?>
<test-results name=........

Allow NUnit to be configured to insert a processing instruction with a given href that points to a xsl-file.