added basic manifesto

app/controllers/static_controller.rb

@@ -1,6 +1,13 @@
 class StaticController < ApplicationController
+  MANIFESTO_FILE = Rails.root.join("public", "manifesto.md")
   skip_before_action :authenticate_user!
 
   def index
   end
+
+  def manifesto
+    @content = File.read(MANIFESTO_FILE)
+    renderer = Redcarpet::Render::HTML.new
+    @markdown = Redcarpet::Markdown.new(renderer, tables: true)
+  end
 end