Clarifiy that 1.5 isn't released yet.

Author: aaugustin

README.rst

@@ -19,7 +19,8 @@ Here's a screenshot of the toolbar in action:
 In addition to the built-in panels, a number of third-party panels are
 contributed by the community.
 
-The current version of the Debug Toolbar is 1.5. It works on Django ≥ 1.8.
+The current version of the Debug Toolbar is 1.5 (in development). It works
+on Django ≥ 1.8.
 
 Documentation, including installation and configuration instructions, is
 available at https://django-debug-toolbar.readthedocs.io/.