[React] Advise using Provider components (or HOC) to set context and higher order components to access context

What do folks think about adding some guidelines around setting and accessing context? Specifically, recommending that context is only set via specialized "Provider" components or perhaps a higher order component, and context is only accessed via specialized higher order components?

Here are some resources on this topic:
- https://medium.com/@bloodyowl/the-provider-and-higher-order-component-patterns-with-react-d16ab2d1636#.w7h9mkqrd
- https://github.com/facebook/react/issues/6525#issuecomment-225395131
- https://gist.github.com/ryanflorence/1e1290571337ebcea1c5a748e8f5b37d

Start by reviewing the linked Provider and higher-order component resources and the referenced React discussion. Determine where the style guide documents React patterns, then clarify the proposed guidance for setting and accessing context with maintainers. Done means the agreed recommendation is added to the appropriate guide section.

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