 
 import Foundation
 
-extension String {
+// MARK: - deviceToken
+
+public extension String {
     // http://stackoverflow.com/a/24979960
-    public init?(deviceToken: Data) {
+    init?(deviceToken: Data) {
         let tokenChars = (deviceToken as NSData).bytes.bindMemory(to: CChar.self, capacity: deviceToken.count)
         var tokenString = ""
         (0..<deviceToken.count).indices.forEach { (i) in

    }
    */
}


    /*
    // http://stackoverflow.com/a/30017241
    init?(deviceToken: NSData) {
        let characterSet = NSCharacterSet(charactersInString: "<>")
        self = (deviceToken.description as NSString)
            .stringByTrimmingCharactersInSet(characterSet)
