* @return list of available continuous integration services
*/
protected List<ServiceSetup> getServices() {
Map<String, String> env = System.getenv();
List<ServiceSetup> services = new ArrayList<ServiceSetup>();
services.add(new Travis(env));
services.add(new Circle(env));
services.add(new Jenkins(env));
services.add(new Bamboo(env));
services.add(new General(env));
return services;