Add information to README highlighting the update guidance. To be rem…

…oved at first release.

README.md

@@ -11,6 +11,13 @@ For full API and user documentation please see the
 [online documentation](https://cambridge-iccs.github.io/FTorch/) which is 
 significantly more detailed than this README.
 
+**NOTE:** _We recently made breaking changes to the API as it heads towards a stable release.
+Please see the
+[online updates documentation](https://cambridge-iccs.github.io/FTorch/page/updates.html)
+for clear guidance on how to easily update your older code to run with the latest version of
+FTorch._
+
+
 ## Contents
 - [Description](#description)
 - [Installation](#installation)
@@ -60,7 +67,10 @@ The following presentations provide an introduction and overview of _FTorch_:
 
 Project status: This project is currently in pre-release with documentation and code
 being prepared for a first release.
-As such breaking changes may be made.
+As we stabilise the API in preparation for first release there may be some breaking changes.
+Please see 
+[online updates documentation](https://cambridge-iccs.github.io/FTorch/page/updates.html)
+for clear guidance on how to easily update your older code to run with the latest version.\
 If you are interested in using this library please get in touch.
 
 _For a similar approach to calling TensorFlow models from Fortran please see [Fortran-TF-lib](https://github.com/Cambridge-ICCS/fortran-tf-lib)._