update readme

Author: nuclearace

README.md

@@ -26,7 +26,7 @@ socket.connect()
 
 ##Objective-C Example
 ```objective-c
-SocketIOClient* socket = [[SocketIOClient alloc] initWithSocketURL:@"localhost:8080" options:nil];
+SocketIOClient* socket = [[SocketIOClient alloc] initWithSocketURL:@"localhost:8080" opts:nil];
 
 [socket onObjectiveC:@"connect" callback:^(NSArray* data, void (^ack)(NSArray*)) {
     NSLog(@"socket connected");
@@ -107,9 +107,9 @@ Objective-C:
 ##API
 Constructors
 -----------
-`init(socketURL: String, opts:NSDictionary? = nil)` - Constructs a new client for the given URL. opts can be omitted (will use default values) note: If your socket.io server is secure, you need to specify `https` in your socketURL.
+`init(socketURL: String, opts: NSDictionary? = nil)` - Constructs a new client for the given URL. opts can be omitted (will use default values) note: If your socket.io server is secure, you need to specify `https` in your socketURL.
 
-`convenience init(socketURL: String, options:NSDictionary?)` - Same as above, but meant for Objective-C. See Objective-C Example.
+`convenience init(socketURL: String, opts: NSDictionary?)` - Same as above, but meant for Objective-C. See Objective-C Example.
 
 Options
 -------