Alphabetize entries in free-programming-books (en)
Merge pull request #1096 from seewes/master

Alphabetize entries in free-programming-books (en)
Add Elementary Algorithms book
fix link nodetuts.com
Merge pull request #1099 from NgaNguyenDuy/master

fix link nodetuts.com
Merge pull request #1100 from JIghtuse/master

Add Elementary Algorithms book