Mozilla site rating now D+

[MikeMcC399]

The site rating as reported in the README has gone down from A+ to D+.

I don't know if this is important or not.

The current rating badge is here:

[Ein-Tim]

For reference, here is the history of how the site was rated in the past:

[MikeMcC399]

If this badge is not important, it would be better to remove it instead of showing a bad rating.