Update npm documentation (4.0.2)

lib/docs/filters/npm/clean_html.rb

@@ -17,6 +17,11 @@ module Docs
           node.inner_html = node.inner_html.gsub(/<\/div>(?!\n|\z)/, "</div>\n")
         end
 
+        css('h1 + h1.subtitle').each do |node|
+          node.name = 'p'
+          node.inner_html += '.'
+        end
+
         css('pre').each do |node|
           node.content = node.content
         end

lib/docs/scrapers/npm.rb

@@ -2,7 +2,7 @@ module Docs
   class Npm < UrlScraper
     self.name = 'npm'
     self.type = 'npm'
-    self.release = '3.10.2'
+    self.release = '4.0.2'
     self.base_url = 'https://docs.npmjs.com/'
     self.force_gzip = true
     self.links = {