bump angular version to angular beta-0 (#angular #beta :))
bump angular version to angular beta-0 (#angular #beta :))

yavin5/angular-async-http,gizm0bill/angular2-rest-client,gizm0bill/angular2-rest-client,yavin5/angular-async-http,yavin5/angular-async-http,Paldom/angular2-rest,Paldom/angular2-rest