Added "Play Framework Recipes"

free-programming-books.md

@@ -1318,6 +1318,7 @@ See also [TeX](#tex)
 * [Exploring Lift](http://exploring.liftweb.net/) (published earlier as "The Definitive Guide to Lift", [PDF](http://groups.google.com/group/the-lift-book))
 * [Lift](http://github.com/tjweir/liftbook)
 * [Lift Cookbook](http://chimera.labs.oreilly.com/books/1234000000030/index.html) - Richard Dallaway
+* [Play Framework Recipes](http://alvinalexander.com/scala/scala-cookbook-play-framework-recipes-pdf-ebook) - Alvin Alexander
 * [Pro Scala: Monadic Design Patterns for the Web](http://github.com/leithaus/XTrace/tree/monadic/src/main/book/content/)
 * [Programming in Scala, First Edition](http://www.artima.com/pins1ed/)
 * [Programming Scala](http://programming-scala.labs.oreilly.com/index.html)