Added link to list in readme

Add Learn Enough Command Line to Be Dangerous

Update free-programming-books

Added a link at the top of the README file to make it easier for readers to find the english list.

add a new great free online book (Adaptive Web Design) to HTML / CSS section

Add space before parenthesis

Turkish Translation Books For Linux and CSS

Add Java 8 and AspectJ books written in Turkish

PHP book: "Survive The Deep End: PHP Security"

D3 Tips and Tricks - updated formats and author

[es] Agregado dos libros: aprenda C++ básico e intermedio

PHP book: Using Libsodium in PHP Projects

Archived link for SO inspiration list

fixes #1405

Merge branch 'master' of git://github.com/csrobinson86/free-programming-books into csrobinson86-master

Conflicts:
	free-programming-interactive-tutorials-en.md

jQuery fundamentals link fix

Add CS Unplugged: Computer Science without a computer

Correct minor typos

change "A" to "The" in "The Haskell School of Music" to match the title on the site.
change Django version number on "Test-Driven Web Development with Python" to 1.8. As the author notes [here](http://chimera.labs.oreilly.com/books/1234000000754/pr02.html#ftn.id619210), he updated the book for 1.8 in Spring 2015, since it's an LTS version.

Update free-programming-books-it.md

Add C# for beginners from Brackeys channel

Add RexEgg