Improve readme

Author: randomairborne

README.md

@@ -8,3 +8,4 @@ GiveIP is an IP address return server with no ads and no BS. \
 You can also use cURL or wget giveip.io, it'll return a plaintext output as long as text/html is not in the Accept header. You can force this behavior by visiting [/raw](https://giveip.io/raw), which has permissive CORS and is free to use for all applications. There is no SLA, but if you want to use it in production, [get in touch](mailto:[email protected]).
 To force a specific kind of IP, you can visit [v4.giveip.io/raw](https://v4.giveip.io/raw) or [v6.giveip.io/raw](https://v6.giveip.io/raw), which have DNS records for only IPv4 and IPv6 respectively.
 Remember: This is at the DNS level! If you can't connect over IPv6, you WILL get an error very early on in the request process for the v6 only endpoint.
+You need to make sure that you catch these errors properly, and don't fatally handle them.