Update Swift Example in wiki for IOS SDK

[ajaybeniwal]

Hi Can u update the Swift example in wiki with below example because its difficult to find for beginners

let parseConfiguration = ParseClientConfiguration {
$0.applicationId = "myAppId"
$0.clientKey = ""
$0.server = "http://your_server.com:1337/parse"
}
Parse.initializeWithConfiguration(parseConfiguration)

[nlutsenko]

Done. Thanks for the suggestion!
Just updated https://github.com/ParsePlatform/parse-server/wiki/Parse-Server-Guide with Swift example.