Get rid of all completions usages

README.rst

@@ -128,9 +128,9 @@ Autocompletion / Goto / Pydoc
 
 Please check the API for a good explanation. There are the following commands:
 
-- ``jedi.Script.goto_assignments``
-- ``jedi.Script.completions``
-- ``jedi.Script.usages``
+- ``jedi.Script.goto``
+- ``jedi.Script.complete``
+- ``jedi.Script.find_references``
 
 The returned objects are very powerful and really all you might need.