Added new Python book "Automate the Boring Stuff"

Added Al Sweigart's newest free book, "Automate the Boring Stuff", starting at chapter 0. You could use http://automatetheboringstuff.com instead of http://automatetheboringstuff.com/chapter0/ but I figured chapter 0 would be more appropriate due to it being the first page of the book and both links have the navigable table of context.

problem-sets: leetcode

Add `Java Programming for Kids, Parents and Grandparents` (UA)

Papers we love

Change link ohaskell.ru -> ohaskell.dshevchenko.biz

Add Programming in Standard ML '97

修改链接地址

Update free-podcasts-screencasts-en.md

Added 3 PHP podcasts.

Add SQLBolt

Adding materials of Graph Theory

Add node.js screencasts

Added A New Book Category and A Book

Added a new book category "Competitive Programming". And added to it a book "Competitive Programming" by Steven Halim, Freely downloadable from his page on the National University of Singapore.

Update free-programming-books-it.md

Added some Lecture Notes

Lecture Notes of Dr. Arbind K Lal

Added Lecture Notes of Dr. Arbind K Lal, IIT Kanpur

Adding Lecture Notes of Linear Algebra

Lecture Notes of Linear Algebra (MTH101) by Dr. P. Shunmugaraj of IITK

Update free-programming-books-ko.md

- Add Python category
- Add 'Git - 간편 안내서' link
- Add '점프 투 파이썬 - Python 3' link
- Add '왕초보를 위한 Python 2.7' link
- Edit Markdown layout style, which are unbalanced.

new ebooks android programming