Handle mkpath of node_modules directory in keg

Library/Homebrew/keg.rb

@@ -141,7 +141,7 @@ class Keg < Pathname
       when /^gdk-pixbuf/ then :mkpath
       when 'ghc' then :mkpath
       when 'lua' then :mkpath
-      when 'node' then :mkpath
+      when /^node/ then :mkpath
       when /^ocaml/ then :mkpath
       when /^perl5/ then :mkpath
       when 'php' then :mkpath