Change README to include edit to workspace name in package.json
Currently, README suggests to copy example-app to my-app as an entire directory.
Doing so copies the package.json within example-app to my-app. The package.json file (now two of them) lists the "name" as "example-app" in both copies.
This breaks the node build step because you cannot have two identically named packages.
Update README to say "After copying directory, edit package.json "name" to "my-app"