updating README.md

Author: Edvin Dunaway

README.md

@@ -1,14 +1,14 @@
 # icedns-python
 
-[![Codacy Badge](https://api.codacy.com/project/badge/Grade/0f1758b92be64207902ecc324608372b)](https://www.codacy.com/manual/Eddinn/icedns-python?utm_source=github.com&utm_medium=referral&utm_content=eddinn/icedns-python&utm_campaign=Badge_Grade) ![GitHub](https://img.shields.io/github/license/eddinn/icedns-python)
+[![Codacy Badge](https://api.codacy.com/project/badge/Grade/0f1758b92be64207902ecc324608372b)](https://www.codacy.com/manual/Eddinn/icedns-python?utm_source=github.com&utm_medium=referral&utm_content=eddinn/icedns-python&utm_campaign=Badge_Grade) ![CircleCI](https://img.shields.io/circleci/build/github/eddinn/icedns-python/master) ![GitHub](https://img.shields.io/github/license/eddinn/icedns-python)
 
 Script to reverse lookup an IP address against .iceland.rix.is to see if it resolves to be an Icelandic IP
 
 ---
 
 ## Requirements
 
-Python >= 3.5
+Python >= 3.3
 
 ### Usage