add default value to namespace in socketparsable

Author: nuclearace

Source/SocketIOClient.swift

@@ -223,17 +223,13 @@ public final class SocketIOClient : NSObject, SocketEngineClient, SocketParsable
         _emit([event] + items)
     }
 
-    /**
-     Sends a message to the server, requesting an ack. Use the onAck method of SocketAckHandler to add
-     an ack.
-     */
+    /// Sends a message to the server, requesting an ack. Use the onAck method of SocketAckHandler to add
+    /// an ack.
     public func emitWithAck(event: String, _ items: AnyObject...) -> OnAckCallback {
         return emitWithAck(event, withItems: items)
     }
 
-    /**
-     Same as emitWithAck, but for Objective-C
-     */
+    /// Same as emitWithAck, but for Objective-C
     public func emitWithAck(event: String, withItems items: [AnyObject]) -> OnAckCallback {
         return createOnAck([event] + items)
     }

Source/SocketParsable.swift

@@ -76,7 +76,7 @@ extension SocketParsable {
             return .Right(SocketPacket(type: type, nsp: "/"))
         }
 
-        var namespace: String?
+        var namespace = "/"
         var placeholders = -1
 
         if type == .BinaryEvent || type == .BinaryAck {
@@ -119,23 +119,24 @@ extension SocketParsable {
             // If first you don't succeed, try again
             if case let .Right(data) = parseData("\([noPlaceholders as AnyObject])") {
                 return .Right(SocketPacket(type: type, data: data, id: Int(idString) ?? -1,
-                    nsp: namespace ?? "/", placeholders: placeholders))
+                    nsp: namespace, placeholders: placeholders))
             } else {
                 return .Left(err)
             }
         case let .Right(data):
             return .Right(SocketPacket(type: type, data: data, id: Int(idString) ?? -1,
-                nsp: namespace ?? "/", placeholders: placeholders))
+                nsp: namespace, placeholders: placeholders))
         }
     }
 
     // Parses data for events
     private func parseData(data: String) -> Either<String, [AnyObject]> {
         let stringData = data.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: false)
+        
         do {
             if let arr = try NSJSONSerialization.JSONObjectWithData(stringData!,
-                options: NSJSONReadingOptions.MutableContainers) as? [AnyObject] {
-                    return .Right(arr)
+                    options: NSJSONReadingOptions.MutableContainers) as? [AnyObject] {
+                return .Right(arr)
             } else {
                 return .Left("Expected data array")
             }