Create a logo for Filter Perms module

Please review.

Both clearly represent the module, but let's go with 1 as its colourful.

Adding proposed logo

Thanks all. I've committed logo.png and you'll see it now at the top of the project page: https://www.drupal.org/project/filter_perms → which I believe means it will show in project browser as well.

adding credits for the Project Browser issue

Automatically closed - issue fixed for 2 weeks with no activity.