examples/material-ui not work

[xingzheone]

getStylesCreator.js:38 MUI: The styles argument provided is invalid.
You are providing a function without a theme in the context.
One of the parent elements needs to use a ThemeProvider.
getStylesCreator.js:42 Uncaught TypeError: theme.spacing is not a function

[Deraen]

The example works for me with the specific material-ui versions in the repo. I've updated the package.json to use exactly versions, instead of accepting any updates.

If the material-ui upgrade breaks the build, it might be a build tool issue or something on the components that did change. But the example should show the general idea of how the interop works, and I don't have an interest to check if with every minor material-ui update.