Merge pull request #160 from jihyq9/patch-1

fix link for Thinking in C++

free-programming-books.md

@@ -369,7 +369,7 @@
 * [CS106X Programming Abstractions in C++](http://www.stanford.edu/class/cs106x/)
 * [Matters Computational: Ideas, Algorithms, Source Code, by Jorg Arndt](http://www.jjj.de/fxt/fxtbook.pdf) (PDF)
 * [Software optimization resources by Agner Fog](http://www.agner.org/optimize/)
-* [Thinking in C++, Second Edition](http://www.mindview.net/Books/TICPP/ThinkingInCPP2e.html)
+* [Thinking in C++, Second Edition, Vol. 1.](http://www.mindviewinc.com/downloads/TICPP-2nd-ed-Vol-one.zip) [(Vol. 2)] (http://www.mindviewinc.com/downloads/TICPP-2nd-ed-Vol-two.zip)
 * [How To Think Like a Computer Scientist: C++ Version](http://greenteapress.com/thinkcpp/index.html) - Allen B. Downey
 * Also see: [The Definitive C++ Book Guide and List](http://stackoverflow.com/q/388242/511601)
 * [C++ Succinctly, Syncfusion ](http://www.syncfusion.com/resources/techportal/ebooks/cplusplus) (PDF, Kindle) *(Just fill the fields with any values)*