application name non-trivial to alter

currently the application name is generated in seven different places making it non-trivial to update.

% grep -Rn MyApp * 
config/application.rb:8:module MyApp
config/environment.rb:5:MyApp::Application.initialize!
config/environments/development.rb:1:MyApp::Application.configure do
config/environments/production.rb:1:MyApp::Application.configure do
config/environments/test.rb:1:MyApp::Application.configure do
config/routes.rb:1:MyApp::Application.routes.draw do |map|
config.ru:4:run MyApp::Application

could this be updated to DRY?