typo

README.md

@@ -97,7 +97,8 @@ look at the wrapper `backend-python.js`.
 #### bkDefualts 
 
 The arguments passed here (typically `webpathRoot`, `configDir`, etc) will be merged with
-any `args` (typically `domains`, `email`, and `agreeTos`) bassed to the backend.
+any `args` (typically `domains`, `email`, and `agreeTos`) and passed to the backend whenever
+it is called.
 
 Typically the backend wrapper will already merge any necessary backend-specific arguments.