Added "High Performance Accelerated Websites" book (#3449)

* Added "High Performance Accelerated Websites" book

* Updated order

free-programming-books.md

@@ -784,6 +784,7 @@ Kerridge (PDF) (email address *requested*, not required)
 #### Web Performance
 
 * [Book of Speed](http://www.bookofspeed.com) - Stoyan Stefanov
+* [High Performance Accelerated Websites](https://thisisyuu.github.io/ebook) - Anshul (HTML) (:construction: *in process*)
 * [High Performance Browser Networking](https://hpbn.co) - Ilya Grigorik
 * [Mature Optimization](http://carlos.bueno.org/optimization/mature-optimization.pdf) - Carlos Bueno (PDF)