code: function serviceConfig() {
  
      var arg = ld.values(arguments), cfg = {};
  
      // try to load file from global directory
      if(typeof arg[0] === 'string') {
          var path = arg.shift();
          try {
              cfg = require('/etc/paukan/'+path+'.json');
          } catch (err) { // try to load file directly if global fails
              try {
                  cfg = require(path);
              } catch (err) {}
          }
      }
  
      // append default settings
      var localCfg = arg.shift();
      if(!ld.isPlainObject(localCfg)) {
          throw new Error('at least local config should be specified');
      }
      ld.defaults(cfg, localCfg);
  
      // load specific field from package.json
      var packageCfg = arg.shift();
      if(ld.isPlainObject(packageCfg)) {
          ld.defaults(cfg, ld.pick(packageCfg, ['version', 'description', 'homepage', 'author']));
      }
  
      return cfg;
  }
docs: Take configuration files and service specific info from package.json
  
  @params {string|object}
  - if first parameter is string - will be added config from /etc/paukan/<name>.json
  - second parameter is confguration object with default settings
  - last (third, or second if name is not specified - object from package.json where service-specific info will be taken)