Added social links to README

README.md

@@ -40,3 +40,12 @@ reference.
 | Special targets | [![Special targets](https://drone.io/github.com/qmachine/qmachine/status.png)](https://drone.io/github.com/qmachine/qmachine/latest) |
 | Unit tests | [![Unit tests](https://travis-ci.org/qmachine/qmachine.svg?branch=master)](https://travis-ci.org/qmachine/qmachine) |
 
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+<a href="https://www.facebook.com/qmachineorg"><img alt="Facebook logo" height="16" width="16" src="//www.google.com/s2/favicons?domain=www.facebook.com"></a>
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+<a href="https://plus.google.com/+qmachineorg"><img alt="Google+ logo" height="16" width="16" src="//www.google.com/s2/favicons?domain=plus.google.com"></a>
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+<a href="https://twitter.com/qmachineorg"><img alt="Twitter logo" height="16" width="16" src="//www.google.com/s2/favicons?domain=twitter.com"></a>
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+<a href="//www.youtube.com/playlist?list=PLwUGp_wSf5vjD5vwzj9Dhqbz-y54oALIe"><img alt="YouTube logo" height="16" width="16" src="//www.google.com/s2/favicons?domain=www.youtube.com"></a>
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