gistfile1.xml

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <system.webServer>
        <staticContent>
            <remove fileExtension=".svg" />
            <mimeMap fileExtension=".svg" mimeType="image/svg+xml" />
            <clientCache cacheControlMode="UseMaxAge"
                         cacheControlMaxAge="7.00:00:00" />
        </staticContent>
    </system.webServer>
</configuration>