I am following the mattdeom boilerplate format, which already includes the iron router & Model (Collection2) . See below :
client/ # Client folder
compatibility/ # Libraries which create a global variable
config/ # Configuration files (on the client)
lib/ # Library files that get executed first
startup/ # Javascript files on Meteor.startup()
stylesheets # LESS files
modules/ # Meant for components, such as form and more(*)
views/ # Contains all views(*)
common/ # General purpose html templates
model/ # Model files, for each Meteor.Collection(*)
private/ # Private files
public/ # Public files
routes/ # All routes(*)
server/ # Server folder
fixtures/ # Meteor.Collection fixtures defined
lib/ # Server side library folder
publications/ # Collection publications(*)
startup/ # On server startup
meteor-boilerplate # Command line tool