reroute atom controller to post

This is not really good, but okay for the moment until the template is
extracted into its own namespace.

controller/atom.rb

@@ -0,0 +1,7 @@
+module Routes
+  class Atom
+    def self.call(session)
+      Post
+    end
+  end
+end

lib/router.rb

@@ -6,7 +6,7 @@ class Router
     puts variables.inspect
     return default_route unless variables && variables[:controller]
     session.options[:id] = variables[:id]
-    find variables[:controller]
+    find(variables[:controller])
   end
 
   # the namespace of all routes