Fixed typo in tutorial. This fixes #19

docs/tutorial/testing.rst

@@ -2,8 +2,7 @@ Bonus: Testing the Application
 ===============================
 
 Now that you have finished the application and everything works as
-expected, it's probably not the best idea to add automated tests to
+expected, it's probably not a good idea to add automated tests to simplify
-simplify modifications in the future.  The application above is used as a
+modifications in the future.  The application above is used as a basic
-basic example of how to perform unittesting in the :ref:`testing` section
+example of how to perform unittesting in the :ref:`testing` section of the
-of the documentation.  Go there to see how easy it is to test Flask
+documentation.  Go there to see how easy it is to test Flask applications.
-applications.