Update Node.js documentation (5.7.0)

lib/docs/scrapers/node.rb

@@ -23,7 +23,7 @@ module Docs
     HTML
 
     version do
-      self.release = '5.6.0'
+      self.release = '5.7.0'
       self.base_url = 'https://nodejs.org/api/'
     end
 

public/icons/docs/node/SOURCE

@@ -1 +1 @@
-http://en.wikipedia.org/wiki/File:Node.js_logo.svg
+https://drive.google.com/folderview?id=0B2SAGsHi4DjIcHB0cTZZcXFZNG8&usp=sharing