update readme

Author: mboot-github

README.md

@@ -2,9 +2,11 @@
 
 - A Python package for retrieving WHOIS information of DOMAIN'S ONLY.
 - Python >=3.10
-- requirements
+- requirements:
     - whodap>=0.1.16 [![Spectra Assure Community Badge](https://secure.software/pypi/badge/whodap)](https://secure.software/pypi/packages/whodap)
     - tld>=0.13.2 [![Spectra Assure Community Badge](https://secure.software/pypi/badge/tld)](https://secure.software/pypi/packages/tld/0.13.2/tld-0.13.2-py2.py3-none-any.whl)
+    - redis (optional) [![Spectra Assure Community Badge](https://secure.software/pypi/badge/redis)](https://secure.software/pypi/packages/redis)
+
 - v1 uses only whois and will be moved to maintenance only
 - v2 will use whodap to first retrieve info with rdap and if no data is available try the classic whois approach