diff --git a/README.md b/README.md
index 8424fa7..89371cc 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,6 @@
-# go-lowercase-redirect
+Go program to redirect to all lowercase url
+=
 
+uses the PORT environment variable to decide which port to listen on (default: 8080)
+
+uses the ADDR environment variable to decide which address to listen on (default: 127.0.0.1)