Update free-programming-books.md

Removed duplicate Matters Computational entry and a link to a leaked pdf (seems like "Mastering Algorithms with C" isn't free at all)
Merge pull request #1203 from kiriakosv/master

Added bash scripting book in greek
Merge pull request #1202 from robschia/patch-1

Update free-programming-books.md
Added Swedish Language

Added Swedish language file (.md) and a C++ book
Add "Compiler Design in C" by Allen Holub
Merge pull request #1206 from WizuO/master

Added Swedish Language
Merge pull request #1207 from chastai/master

Add "Compiler Design in C" by Allen Holub
Added Swedish to ReadMe list
Merge pull request #1208 from WizuO/master

Added Swedish to ReadMe list