Added free eBooks that I am aware of.

I had a blog post here:

http://www.gep13.co.uk/blog/free-ebooks/

which listed some free eBooks that I was aware of.  I have taken the programming related ones, and added them to this list.
Corrected links

Corrected the internal link to the Windows 8 section.
Corrected the external link to Windows Phone Blue Book
Détecter et résoudre les erreurs, extraits du LaTeX compagnion
remettre dans l'ordre
Merge pull request #285 from minsOne/master

Add Html5, CSS and Javascript Book Blog Link
Merge pull request #283 from gep13/master

Added free eBooks that I am aware of.
Merge pull request #284 from maieul/master

Annexe B du LaTeX Companion + remise en ordre alphabetique des titres
Added Conversational Git book.
Added JavaScript Ebook
Merge pull request #287 from ArunMichaelDsouza/master

Added JavaScript Ebook
Added the tech.pro knockout.js tutorial video series.
Merge pull request #289 from rodrigo-medeiros/master

Added the tech.pro knockout.js tutorial video series.
css book
Added Data-Oriented design free eBook
Merge pull request #290 from johand/css3

css book
Merge pull request #286 from ridelub/master

Update free-programming-books.md
Revert "Added Data-Oriented design free eBook"

This reverts commit dd0b69d071358d8ad72b7c53563972e9d970ed47.
Added DOD free ebook (without changing the WHOLE file)
Merge pull request #291 from Sirithang/master

Added Data-Oriented design free eBook
added Learn to Program by Chris Pine (under Ruby)