Update README.md

Author: Udinic

README.md

@@ -6,7 +6,7 @@ A sample app to demonstrate some of Android Authenticator's abilities.
 ![screenshots](screenshots/sampleapp.png)    ![screenshots](screenshots/accounts.png)
 
 
-This subject and source code is explained in my blog post at http://udinic.wordpress.com/2013/04/24/write-your-own-android-authenticator/
+This subject and source code is explained in my blog post at https://blog.udinic.com/2013/04/24/write-your-own-android-authenticator/
 
 
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