Update free-programming-books-gr.md
add Coffeescript Style Guide
fix the inde
Added HTML/CSS and Swift courses
Updated link
add The Django Book 2.0 to Python series
Merge pull request #1115 from LeonSin/master

add The Django Book 2.0 to Python series
added two Git resources; adjusted some format details
Merge pull request #1116 from sunxb10/master

added two Git resources and adjusted some format details
un livre à prix libre sur Vim
Merge pull request #1117 from maieul/master

un livre à prix libre sur Vim
added multiple resources, including regex, c/c++, fortran, go and swift
fixed formatting: added fortran to the index
Merge pull request #1118 from sunxb10/master

added multiple resources to zh
Added english book about reverse engineering
Merge pull request #1120 from grogy/reverse-engineering

Added english book about reverse engineering
Two podcasts added to the list of javascript
Merge pull request #1121 from gabrielalmir10/patch-3

Two podcasts added to the list of javascript
Changed link

Mathematics for Computer Science (November 2013 Version) old link directed to a page that requested password, used a new link that doesn't require one.
Merge pull request #1124 from JIGD/master

Changed link