added link to wiki page with example scripts for dns-01, fixes #117

README.md

@@ -97,6 +97,7 @@ Or when you do have a DNS API, pass the details accordingly to achieve the same
 
 You can delete the TXT record when called with operation clean_challenge, when $2 is also the domain name.
 
+Here are some examples: [Examples for DNS-01 hooks](https://github.com/lukas2511/letsencrypt.sh/wiki/Examples-for-DNS-01-hooks)
 
 ### Elliptic Curve Cryptography (ECC)