Added iOS 8 App Development Essentials

free-programming-books.md

@@ -1005,6 +1005,7 @@
 
 ### iOS
 * [Cocoa Dev Central](http://cocoadevcentral.com/)
+* [iOS 8 App Development Essentials](http://www.techotopia.com/index.php/IOS_8_App_Development_Essentials)
 * [iOS Succinctly, Syncfusion](http://www.syncfusion.com/resources/techportal/ebooks/ios) (PDF, Kindle) *(Just fill the fields with any values)*
 * [Start Developing iOS Apps Today](https://developer.apple.com/library/ios/referencelibrary/GettingStarted/RoadMapiOS/RoadMapiOS.pdf) (PDF)