Alphabetized Ruby books
Fixed alphabetization of Ruby Books

Titles leading with "The" are ignored.
Spaces have precedence over letters
Alphabetized Ruby books

Ordered like a dictionary A-Z. Removed duplicate (http://humblelittlerubybook.com/book/)
add #php
Updated Ruby Books

Deleted tryruby.org since it is available in the interactive file
Alphabetize git interactive
Alphabetize ruby interactive
Merge pull request #657 from Mouseion/patch-int-tutorials

Alphabetize interactive tutorials
Merge pull request #656 from smtaydemir/patch-2

add #php
Merge pull request #650 from gabriellim/patch-7

Alphabetized Ruby books
were placed in alphabetical order
Merge pull request #659 from smtaydemir/patch-4

[tr] Alphabetized
Added aosabook translation
Merge pull request #660 from JIghtuse/master

Added aosabook translation
Merge branch 'master' of https://github.com/vhf/free-programming-books