lib/classes/Utils.js/Utils/findServicePath
class Utils:  findServicePath() {
    let servicePath = null;

    if (fileExistsSync(path.join(process.cwd(), 'serverless.yml'))) {
      servicePath = process.cwd();
    } else if (fileExistsSync(path.join(process.cwd(), 'serverless.yaml'))) {
      servicePath = process.cwd();
    } else if (fileExistsSync(path.join(process.cwd(), 'serverless.json'))) {
      servicePath = process.cwd();
    } else if (fileExistsSync(path.join(process.cwd(), 'serverless.js'))) {
      servicePath = process.cwd();
    }

    return servicePath;
  }