index.js
function(zip, callback) {

			var queryString = "?postalCode="+zip;
			httpGet(queryString, function(err, results) {
				callback(err, results);
			});

		}
function(zip, callback) {

			var queryString = "?postalCode="+zip;
			httpGet(queryString, function(err, results) {
				callback(err, results);
			});

		}
function ( zip , callback ) { var queryString = "?postalCode=" + zip ; httpGet ( queryString , function ( err , results ) { callback ( err , results ) ; } ) ; }
callback for getForecastByZipCode
@callback module:asthma-forecast/client~getForecastByZipCodeCallback
@param {Object} [err] error calling Propeller API
@param {Object} [result] forecast
 
getForecastByZipCode
@param {String} options.zipCode Zip code
@param {module:asthma-forecast/client~getForecastByZipCodeCallback} [callback] callback
callback for getForecastByZipCode