Update nim.rb

added most recent version 2.2.0

lib/docs/scrapers/nim.rb

@@ -17,6 +17,10 @@ module Docs
       Licensed under the MIT License.
     HTML
 
+    version do
+      self.release = '2.2.0'
+    end
+    
     version do
       self.release = '2.0.2'
     end