Quick fix to zh list
Merge pull request #538 from jgpacker/patch-1

Quick fix to zh list
Added postgresql section.
Merge pull request #539 from Kindrat/master

Added postgresql section.
Fixed link in table of contents to .NET section
Merge pull request #540 from kohenkatz/patch-1

Fixed link in table of contents to .NET section
Update free-programming-books.md
Remove duplicate entry

The removed line corresponds with the Haskell Wikibook link which is already present. (The wikibook link is usually more updated than the removed pdf version. Also you can download pdf version of this book from the wikibook link.)
Merge pull request #541 from psibi/patch-1

Remove duplicate entry - Heskell
added git tutorial
editing index format
Merge pull request #543 from adililhan/master

Turkish: git tutorial & Indexing
Update the numbers of starring people
Adding ahkbook

a free online book about AutoHotkey. AHK is free, open-source scripting
language for Windows - more at www.ahkscript.org and www.autohotkey.com
Merge pull request #544 from hi5/AutoHotkey

Adding AutoHotkey Book
Added Google style guides (official & unofficial)

Added the list from https://code.google.com/p/google-styleguide/, which includes C++, Objective C, Java, Python, HTML/CSS, and Common Lisp. Also added is Ian McDonald's Ruby guide, which was used internally on an unofficial basis but is also thorough.
added JavaScript Patterns Collection
Merge pull request #547 from dannguyen/patch-2

added JavaScript Patterns Collection
Merge branch 'patch-1' of github.com:dannguyen/free-programming-books into dannguyen-patch-1

Conflicts:
	free-programming-books.md
Added Algorithms and datastructure