docs: function getTransport (name, options) {
  	name = ('' + name).toLowerCase();
  	if (!transports[name]) {
  		try {
  			transports[name] = require('../transports/' + name);
  		} catch (e) {
  			if (e.code === 'MODULE_NOT_FOUND') {
  				throw new Error('Could not load transport (' + name + ')');
  			} else {
  				throw e;
  			}
  		}
  	}
  	return transports[name];
  }