Update README.md

Author: suale-dev

README.md

@@ -1,3 +1,72 @@
 # JavaScriptInterface
 KWebView help you to call native code from Javascript in the iOS application.
 Written by Swift 2.0. It's similar WebView.addJavascriptInterface in the Android application.
+
+# Setting your project
+
+Step 1: 
+Expand the Link Binary With Libraries section and add the following item:
+JavaScriptCore.framework
+
+Step 2:
+- Define a protocol, inherit from JSExport protocol, which contains these native functions as you want to work with JavaScript
+For example:
+@objc protocol MyExport : JSExport
+{
+    func check(message : String)
+    func sayGreeting(message: String, _ name: String)
+    func anotherSayGreeting(message: String, name: String)
+    func showDialog(title: String, _ message : String)
+}
+
+Step 3:
+Define a class to implement native functions above
+For example:
+class JSInterface : NSObject, MyExport
+{
+    func check(message: String) {
+        print("JS Interface works!")
+    }
+    
+    func sayGreeting(message: String, _ name: String)
+    {
+        print("sayGreeting: \(message): \(name)")
+    }
+    
+    func anotherSayGreeting(message: String, name: String)
+    {
+        print("anotherSayGreeting: \(message): \(name)")
+    }
+
+    func showDialog(title: String, _ message : String)
+    {
+        dispatch_async(dispatch_get_main_queue(), {
+            UIAlertView(title: title, message: message, delegate: nil, cancelButtonTitle: "OK").show()
+        })
+    }
+}
+
+
+Step 4: 
+From Indentity Inspector of your UIWebView, at Custom class section, update Class attribute to KWebView
+
+Step 5:
+Create an outlet to the webview in your view controller
+@IBOutlet weak var webView : KWebView!
+
+Step 6: 
+Add java script interface as below:
+self.webView.addJavascriptInterface(JSInterface(), forKey: "Native");
+
+# Inuse
+
+Now to call those native functions above from JavaScipt is loaded your webview, just call:
+
+Native.check()
+Native.sayGreeting('Hello', 'JavaScript Interface')
+..
+
+
+
+
+