Release instructions do not suggest to bump the model/view version numbers

[rmorshea]

The problems I was experiencing in #82 were a result of the fact that I had not bumped the model/view versions in the widget definition as suggested by @jasongrout. This is probably because the RELEASE.mdfile does not suggest doing so.

[jasongrout]

Feel free to submit a PR to add such language where and how you would have found useful!