Merge pull request #2 from ARX-SKE12/authentication

Update Doc

README.md

@@ -1 +1,54 @@
-# facebook-auth-kit
+# Facebook Authentication Kit for Unity
+
+Facebook Authentication Toolkit for Unity
+
+## Usage
+
+* Add Facebook Auth Controller from `FBAuthKit/Kit/Prefabs/Facebook Auth Controller.prefab` to your Unity scene.
+
+* Create Facebook Auth subscriber script and put it to scene.
+
+## Facebook Auth Subscriber
+
+```cs
+using UnityEngine;
+using Facebook.Unity;
+using FBAuthKit;
+
+public class ExampleFBAuthSubscriber : MonoBehaviour {
+
+    void Start()
+    {
+        //Register as subscriber
+        facebookController.GetComponent<FacebookAuthController>().Register(gameObject);    
+    }
+
+    void OnAuthSuccess(AccessToken token)
+    {
+        //Do something when authentication is successful.
+    }
+
+    void OnInitializedFailure()
+    {
+        //Do something when Facebook SDK initialization is failure.
+    }
+
+    void OnAuthRequest()
+    {
+        //Do something when waiting process of Facebook Authentication.
+    }
+
+    void OnAuthFailure()
+    {
+        //Do something when authentication is failure.
+    }
+
+}
+```
+
+## Solution when Facebook.Unity.Setting.dll is duplicate!
+
+1. Close Unity
+2. Go to `C:\Program Files\Unity\Editor\Data\PlaybackEngines`
+3. Remove `Facebook`
+4. Open Unity Project Again