Manage the npm configuration files
+npm.commands.config(args, callback)
+var val = npm.config.get(key)
+npm.config.set(key, val)
+This function acts much the same way as the command-line version. The first +element in the array tells config what to do. Possible values are:
+set
Sets a config parameter. The second element in args is interpreted as the
+ key, and the third element is interpreted as the value.
get
Gets the value of a config parameter. The second element in args is the
+ key to get the value of.
delete (rm or del)
Deletes a parameter from the config. The second element in args is the
+ key to delete.
list (ls)
Show all configs that aren't secret. No parameters necessary.
+edit:
Opens the config file in the default editor. This command isn't very useful + programmatically, but it is made available.
+To programmatically access npm configuration settings, or set them for
+the duration of a program, use the npm.config.set and npm.config.get
+functions instead.