domains.txt added

- The domain names example.com, example.net, example.org, and example.edu are second-level domain names in the Domain Name System of the Internet.
- They are reserved by the Internet Assigned Numbers Authority (IANA) at the direction of the Internet Engineering Task Force (IETF) as special-use domain names for documentation purposes.

domains.txt

@@ -0,0 +1,4 @@
+example.com
+example.edu
+example.net
+example.org