Added LxOffLine instruction, draftgp

[llinfeng]

💡 我这次对这些地方做出了更改：

1. Drafted a page on using LxRunOffline to deploy a fresh Linux distribution.

PS: 中文输入法在编辑时候出问题了，如需中文版本请告知。

[llinfeng]

Further, it appears to me one should be able to move things through USB drive. References:

• Instruction for advanced usage:
  • Duplicate first;
  • Then, move the files
  • Source: How to backup the installed distributions and install to another machine？ DDoSolitary/LxRunOffline#29

[spencerwooo]

emmm，也行吧，最好有中文版本，毕竟这个文档是主要面向中国用户的。我先 merge 咯~

[spencerwooo]

最新的 commit 里面我修改了几个地方的单词，还加上了作者 badge。期待中文版本哈哈哈 😉