Update free-podcasts-screencasts-ru.md

Add url of introduction to cobol to list

add python.coderz.ir

add python.coderz.ir in fa_IR index

Added fpc ref guide; removed broken NV gems2 pdf

ko : Add swift section with 1 document

ko : Add swift section with 1 document

Merge branch 'master' of https://github.com/leonardorifeli/free-programming-books into leonardorifeli-master

ko : add perl in index, include node.js in js.

Switch to 2nd Edition of Pro Git

Fix dead link in Graphics Programming section

Fix link to *Learning Modern 3D Graphics Programming*.  The source of the updated link is the author's [Wiki](https://bitbucket.org/alfonse/gltut/wiki/Home) for the book.

* add perl in index
* include node.js in javascript section as in English document.

Noticeable -> Notable

I suppose `noticeable` isn't 100% wrong but I think the word you're looking for is `notable`. 👍

Merge branch 'patch-2' of https://github.com/jrmadsen67/free-programming-books into jrmadsen67-patch-2