Basic structure

forgrace.js

angular.module('index.controllers', [])
.controller('Ctrl', ['$scope', '$http', 'Service', function($scope, $http, Service){
    
}]);

angular.module('index.services')
.factory('Service', [function(){
    var Service = {
        stuff: 'here'
    };
    
    return Service;
}]);

angular.module('index', [
    'index.controllers',
    'index.services',
]).config(['$routeProvider', '$http', 'Service', function($routeProvider, $http, Service){
    // do stuff here
}])