Update README.md

README.md

@@ -5,12 +5,42 @@
 [![License](https://img.shields.io/cocoapods/l/SwiftyInvocation.svg?style=flat)](http://cocoapods.org/pods/SwiftyInvocation)
 [![Platform](https://img.shields.io/cocoapods/p/SwiftyInvocation.svg?style=flat)](http://cocoapods.org/pods/SwiftyInvocation)
 
+
+Have you ever dreamed about using NSInvocation from Swift code?
+You hate Apple for the NS_SWIFT_UNAVAILABLE macro?
+
+Me neither.
+
+But sometimes we just HAVE to use it. And here it is.
+
 ## Example
 
-To run the example project, clone the repo, and run `pod install` from the Example directory first.
+Check the unit tests.
+
+```swift
+let array: NSArray = ["1", "2", "3"]
+
+let selector = #selector(NSArray.object(at:))
+let methodSignature = NSArray.si_instanceMethodSignature(for: selector)
+let invocation = SIInvocation(methodSignature: methodSignature)
+invocation.target = array
+invocation.selector = selector
+var argument = 1
+invocation.setArgument(&argument, at: 2)
+invocation.retainArguments()
+
+invocation.invoke()
+
+var returnValue: Unmanaged<NSString>?
+invocation.getReturnValue(&returnValue)
+
+XCTAssertEqual(returnValue?.takeUnretainedValue(), "2")
+```
 
 ## Requirements
 
+Swift 3, Objective-C runtime
+
 ## Installation
 
 SwiftyInvocation is available through [CocoaPods](http://cocoapods.org). To install
@@ -22,7 +52,7 @@ pod "SwiftyInvocation"
 
 ## Author
 
-piotr-tobolski, piotr.tobolski@intive.com
+Piotr Tobolski, piotr.tobolski@me.com
 
 ## License