unclear code in readme

[cmacrander]

The block of code in the readme giving an example of inserting html via jinja should look like this instead:

        ...
        {{ profiler_includes() }}
    </body>
</html>

And if you have escaping on, it should look like this:

        ...
        {{ profiler_includes() | safe }}
    </body>
</html>

[sophiebits]

Or maybe this should be wrapped in markupsafe.Markup…