Update README.md

Author: tiptenbrink

README.md

@@ -248,6 +248,8 @@ First, `tidploy` needs to find the 'address' of its deployment. It will keep res
 
 ### Address
 
+An address is a way to change the root of your resolution
+
 An address is either just a filesystem path, or a Git repository URL combined with a ref. For ref we explicitly support three different types:
 - A branch (git/refs/heads): In this case it is your responsibility that the head is up to date
 - A commit