Books from hackershelf; created Russian list

I also fixed line with 'mod_perl', because underscore in Markdown
means emphasis and it continues at the rest of the file (at least in
vim).
Merge branch 'master' of https://github.com/vhf/free-programming-books
Fix missing spaces
Added some of Syncfusion free e-books (Javascript, Knockout, Data Structures etc.)
Added some of RedGate free e-books (SQL Server, .Net, Misc)
Added JavaScript Frameworks Resources
Merge pull request #158 from JIghtuse/master

Books from hackershelf; created Russian list
Merge pull request #159 from ggarek/master

Added some of Syncfusion and RedGate free e-books
Whitespace fix
Readme update
Fixed Markdown syntax
Prolog section update
Add missing PDF mentions
Add Knockout.js to JS frameworks