Lecture04

LICENCE

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 The MIT License (MIT)
 
-Copyright (c) 2016-2017 Sergey Rybalkin
+Copyright (c) 2016-2018 Sergey Rybalkin
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

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 [![Build Status](https://travis-ci.org/rybalkinsd/atom.png?branch=master)](https://travis-ci.org/rybalkinsd/atom)
 
+[![](http://icons.iconarchive.com/icons/dakirby309/simply-styled/32/YouTube-icon.png) Youtube channel](https://www.youtube.com/playlist?list=PLrCZzMib1e9pnFbVV3u4s7ki5NTnm7WgT) - watch course videos
 
-[![](http://icons.iconarchive.com/icons/alecive/flatwoken/32/Apps-Telegram-icon.png) Join chat](https://t.me/joinchat/AAAAAEF63F9PvqE4JDzYdQ) - feel free to contact us  
-[![](http://icons.iconarchive.com/icons/dakirby309/simply-styled/32/YouTube-icon.png) Youtube channel](https://www.youtube.com/playlist?list=PLrCZzMib1e9pnFbVV3u4s7ki5NTnm7WgT)  
+[![](http://icons.iconarchive.com/icons/alecive/flatwoken/32/Apps-Telegram-icon.png) Join chat](https://t.me/joinchat/AAISfEF63F8pPTObTsrR9w) - feel free to contact us  
 
 Course repository. All course lectures/sources/homeworks are available here.  
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-
-[![Course announcement](https://img.youtube.com/vi/12Ur1brHHz8/0.jpg)](https://www.youtube.com/watch?v=12Ur1brHHz8&feature=youtu.be "Course announcement")
 
 ## Lectures list:
 [Lecture 1. Basics, git](https://gitpitch.com/rybalkinsd/atom/lecture01?grs=github&t=white&p=lecture01%2Fpresentation#/)