func loadCSV(filename: String) -> [String] {
let csvBundle = NSBundle.mainBundle().pathForResource(filename, ofType: "csv");
var csvArray:Array<String> = [];
do {
let csvData = try String(contentsOfFile: csvBundle!,
encoding: NSUTF8StringEncoding)
let lineChange = csvData.stringByReplacingOccurrencesOfString("\r", withString: "\n")
csvArray = lineChange.componentsSeparatedByString("\n")
}
catch {
print("csv load error")
}
return csvArray;
}