Added "Agile Android Software Development" eBook in the list under the Android section.  The book is currently in writing progress, but new chapters are released as soon they are copy-edited.  "Release 1.0" is expected in January 2015.

add two japanese books

[ja] Added Swift book

Update free-programming-books-fr.md

error HTTP 403.

fixed a dead link in zh.md

推荐一本nodojs的书

a book about nodejs

Erlang in Anger

Added Raspberry Pi User Guide

This User Guide is written by Eben Upton, Co-Creator of the Raspberry Pi

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.

Two podcasts added to the list of javascript

Added english book about reverse engineering

added multiple resources to zh

un livre à prix libre sur Vim

added two Git resources and adjusted some format details

add The Django Book 2.0 to Python series

Merge branch 'czech-books-update' of github.com:grogy/free-programming-books into grogy-czech-books-update

Conflicts:
	free-programming-books-cs.md

Added czech book for security

Added books in slovak language

Change URL to official source

Update free-programming-books-zh.md