Get help on npm
npm help <term> [<terms..>]
If supplied a topic, then show the appropriate documentation page.
If the topic does not exist, or if multiple terms are provided, then run
help-search command to find a match. Note that, if
finds a single subject, then it will run
help on that topic, so unique
matches are equivalent to specifying a topic name.
The program to use to view help content.
"browser" to view html help content in the default web browser.