Linked to DSF fundraising page from README.

README.rst

@@ -45,3 +45,10 @@ To run Django's test suite:
 * Follow the instructions in the "Unit tests" section of
   ``docs/internals/contributing/writing-code/unit-tests.txt``, published online at
   https://docs.djangoproject.com/en/dev/internals/contributing/writing-code/unit-tests/#running-the-unit-tests
+
+Supporting the Development of Django
+====================================
+
+Django's development depends on your contributions. 
+
+If you depend on Django, remember to support the Django Software Foundation: https://www.djangoproject.com/fundraising/