Update README.md

Author: pmarks-net

README.md

@@ -28,3 +28,6 @@ https://microsoftedge.microsoft.com/addons/detail/ipvfoo/dphnkggpaicipkljebciobe
 ## Safari?
 
 IPvFoo cannot be [ported to Safari](https://github.com/pmarks-net/ipvfoo/issues/39) because the `webRequest` API does not report IP addresses.  In theory, a Safari extension could do its own DNS lookups over HTTPS, but such behavior is beyond the scope of IPvFoo.
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+Donate: https://liberapay.com/pmarks