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
Merge pull request #548 from OpenCode/patch-7

Added Algorithms and datastructure