code: function SessionManagerFactory(options) {
  
  	  log.debug('[chimp][session-manager-factory] options are', options);
  
  	  if (!options) {
  		  throw new Error('options is required');
  	}
  
  	  if (!options.port) {
  		  throw new Error('options.port is required');
  	}
  
  	  if (!options.browser && !options.deviceName) {
  		  throw new Error('[chimp][session-manager-factory] options.browser or options.deviceName is required');
  	}
  
  	  if (options.host && (options.host.indexOf('browserstack') > -1 || options.host.indexOf('saucelabs') > -1 || options.host.indexOf('testingbot') > -1)) {
  
  		  if (!options.user || !options.key) {
  			  throw new Error('[chimp][session-manager-factory] options.user and options.key are required');
  		}
  
  		  if (options.host.indexOf('browserstack') > -1) {
  			  return new BsManager(options);
  		} else if (options.host.indexOf('saucelabs') > -1) {
  			  return new SlManager(options);
  		} else if (options.host.indexOf('testingbot') > -1) {
  			  return new TbManager(options);
  		}
  
  	} else {
  		  return new SessionManager(options);
  	}
  
  }
docs: Wraps creation of different Session Managers depending on host value.
  
  @param {Object} options
  @api public