Added note regarding Django version and incremented version to 0.4.3

Author: Mark Gibbs

README.md

@@ -29,6 +29,8 @@ Then, just add `django_plotly_dash` to `INSTALLED_APPS` in your Django `settings
         ...
         ]
 
+Note that this package requires version 2.0 or greater of Django, due to the use of the `path` function for registering routes.
+
 ## Demonstration
 
 The source repository contains a demo application. To clone the repo and lauch the demo:

django_plotly_dash/__init__.py

@@ -1,6 +1,6 @@
 #
 
-__version__ = "0.4.2"
+__version__ = "0.4.3"
 
 from .dash_wrapper import DjangoDash
 

docs/introduction.rst

@@ -29,3 +29,5 @@ above for stateless applications.
 
 Also, an enhanced version of the ``Dash`` callback is provided, giving the callback access to the current User, the current session, and also
 the model instance associated with the application's internal state.
+
+This package is compatible with version 2.0 onwards of Django, as it uses the new path registration functionality.