I need to use `crm` tool from npm, which is not packaged, and using `npm install crx` I
couldn't find the binary until I came across this article -
http://2ality.com/2016/01/locally-installed-npm-executables.html
It is not recommended way to do this, but for a problem oriented workflow it is still
worthy to explain `npm bin`. If there is a way to install such binary utils in isolated
environment without hurting system dependencies (Python virtualenv), I would be happy to
follow. Making npm-installed packages global is not my goal.