books about software testing
Remove duplicate link
Remove dead link
Merge branch 'master' of github.com:ligurio/free-programming-books into ligurio-master

Conflicts:
	README.md
Updated ahkbook link.
Merge pull request #1028 from george2/patch-2

Updated ahkbook link.
Added Jenkins Book
added a more trusted sire for Jenkins pdf
Merge pull request #1029 from amishpatel1994/master

Added Jenkins Book
fixes #1026
Merge pull request #1030 from borgified/fix_1026

fixes #1026
Remove Emacs from file
Update free-programming-books

Added FutureLearn Mooc
Merge pull request #1031 from alcole/master

Update free-programming-books
add R book
Merge pull request #1033 from uribo/master

add R book
Add PHP track
Add Go koans
Merge pull request #1035 from Mouseion/patch-interactive

Update interactive tutorials
Added Human Javascript