Merge pull request #1 from LCTT/master

更新2014年12月26日
Update 20141008 How To Use Steam Music Player on Ubuntu Desktop.md
Delete 20141008 How To Use Steam Music Player on Ubuntu Desktop.md
Create 20141008 How To Use Steam Music Player on Ubuntu Desktop.md
Translating by mtunique
【翻译完成】20141224 Linux FAQs with Answers--How to install non-free packages on Debian
Merge pull request #2156 from geekpi/master

translating
Merge pull request #2157 from geekpi/master

translated
Merge pull request #2154 from H-mudcup/master

Translated 20141008 How To Use Steam Music Player on Ubuntu Desktop.md
没事，原文本来也是要删除的。恭喜你完成了第一篇翻译！我会马上发布~
Merge pull request #2155 from mtunique/master

【翻译中】20141224 Linux FAQs with Answers--How to install non-free packages on Debian
20141229-1 选题
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