Module "request" is a dependency, but not installed by "npm install"

[MikeBishop]

Adding this module causes MM2 not to start, complaining about missing module "request" even after running npm install in the module directory. Presumably this is an undeclared dependency which needs to be added to package.json.

[Bovive]

Found the answer in another thread. Ran "npm install request" in the module folder.

73cirdan/MMM-rainfc#15