message: [dev] make sure we set a user agent
diff: @@ -103,7 +103,7 @@ randomBOOL(void)
  AppSetup *setup = [AppSetup ambientSetup];
  - AREmissionConfiguration *config = [[AREmissionConfiguration alloc] initWithUserID:userID authenticationToken:accessToken sentryDSN:nil googleMapsAPIKey:nil gravityHost:setup.gravityURL metaphysicsHost:setup.metaphysicsURL];
  + AREmissionConfiguration *config = [[AREmissionConfiguration alloc] initWithUserID:userID authenticationToken:accessToken sentryDSN:nil googleMapsAPIKey:nil gravityHost:setup.gravityURL metaphysicsHost:setup.metaphysicsURL userAgent:@"Emission Example"];
  emission = [[AREmission alloc] initWithConfiguration:config packagerURL:setup.jsCodeLocation];
  [AREmission setSharedInstance:emission];
  