angular
.module('MyApp', [])
.constant('VERSION', 1.0);
Your constant is now declared and can be injected in a controller, a service, a factory, a provider, and even in a config method:
angular
.module('MyApp')
.controller('FooterController', function(VERSION) {
this.version = VERSION;
});
<footer ng-controller="FooterController as Footer">{{ Footer.version }}</footer>