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Merge pull request #7 from Maclauring/master

[翻译]惠普在华1500家实体店销售Ubuntu笔记本
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Delete Ranger – A Text Based File Manager For Command Line Users.md
Delete Powerful ebook editor Sigil moved to new development area, looking for code contributions and active participation.md
发布：How to easily backup and reuse data of Firefox and Chromium
发布：WinUSB--Create A Bootable Windows USB In Linux
Merge pull request #8 from theo-l/master

翻译中by theo
发布：German City Starts Distributing Free Ubuntu 12.04 CDs to Windows XP Users

翻译的非常不错！言语风趣可信。
待校对：5,800 Ubuntu users' 2013 Ubuntu cloud survey results published
翻译中by Theo-l