Update Node.js documentation (5.6.0 and 4.3.0)

assets/javascripts/app/app.coffee

@@ -103,11 +103,14 @@
   migrateDocs: ->
     for slug in @settings.getDocs() when not @docs.findBy('slug', slug)
       needsSaving = true
-      if doc = @disabledDocs.findBy('slug_without_version', slug)
+      doc = @disabledDocs.findBy('slug', 'node~4_lts') if slug == 'node~4.2_lts'
+      doc ||= @disabledDocs.findBy('slug_without_version', slug)
+      if doc
         @disabledDocs.remove(doc)
         @docs.add(doc)
 
     @saveDocs() if needsSaving
+    return
 
   enableDoc: (doc, _onSuccess, onError) ->
     return if @docs.contains(doc)

lib/docs/scrapers/node.rb

@@ -23,12 +23,12 @@ module Docs
     HTML
 
     version do
-      self.release = '5.5.0'
+      self.release = '5.6.0'
       self.base_url = 'https://nodejs.org/api/'
     end
 
-    version '4.2 LTS' do
+    version '4 LTS' do
-      self.release = '4.2.6'
+      self.release = '4.3.0'
       self.base_url = "https://nodejs.org/dist/v#{release}/docs/api/"
     end
   end