code: function isConfigurationParametersDefinedCorrectly(config) {
  		if (!config) {
  			gutil.log('license-check', gutil.colors.red('Config must be defined to run the plugin'));
  			return false;
  		}
  
  		if (!config.path) {
  			gutil.log('license-check', gutil.colors.red('License header property {path} must be defined to run the plugin'));
  			return false;
  		}
  
  		return true;
  	}
docs: Check that the configuration parameter are setted correctly.
  
  @param {object} config - plugin configurations.
  
  @returns {boolean} return true if the parameters are set correctly.