"In the wild" section a bit of a graveyard

There do not seem to be many projects in the [in the wild](https://github.com/civiccc/react-waypoint/blob/HEAD/INTHEWILD.md) section that are still in business or online.

Start with INTHEWILD.md, linked from the issue, and review each listed project for whether it is still online or in business. Update the section to remove or revise entries that are no longer current; the work is done when the listed projects have been checked and the section reflects the findings.

Written by the indexing model from the issue text.