Incorrect example for onStubActivation on Usage Examples page

[kirilstrax]

New Issue Checklist

• I have tried with the latest version of OHHTTPStubs
• I have read the README
• I have read the Using the right Swift Version of OHHTTPStubs for your project section
• I have searched in the existing issues
• I have read the OHHTTPStubs wiki to see if there wasn't a detailed page talking about my issue

Environment

• version of OHHTTPStubs: 8.0.0
• integration method you are using:
  • Cocoapods
  • Carthage
  • submodule
  • other
• version of the tool you use: not applicable

Issue Description

The example on Usage Examples page is shown as follows:

// Swift
OHHTTPStubs.onStubActivation() { request, stub in
  println("\(request.URL!) stubbed by \(stub.name).")
}

Problem 1: Signature of onStubActivation was changed a few versions ago. So it should be:

OHHTTPStubs.onStubActivation() { request, stub, response in

This problem applies to both, Swift and Objective C examples

Problem 2: replace println with print in Swift, as there's no println function in swift.

Problem 3: in Swift, NSURLRequest is bridged as URLRequest, and instead of request.URL!, it uses lower-cased request.url!

Bottom line: example in Swift should look something like this:

// Swift
OHHTTPStubs.onStubActivation() { request, stub, response in
  print("\(request.url!) stubbed by \(stub.name) of size \(response.dataSize).")
}

Complete output when you encounter the issue (if any)

This is documentation update issue, so not applicable.