Add Node.js Succinctly book.

free-programming-books.md

@@ -1057,6 +1057,7 @@
 * [Mixu's Node Book](http://book.mixu.net/node/)
 * [Node: Up and Running](http://chimera.labs.oreilly.com/books/1234000001808/index.html) - Tom Hughes-Croucher
 * [The Node Beginner Book](http://nodebeginner.org/)
+* [Node.js Succinctly, Syncfusion](http://www.syncfusion.com/resources/techportal/ebooks/nodejs) (PDF, Kindle) *(Just fill the fields with any values)*
 
 
 ###LaTeX