中文翻譯新增

A script needs read, as well as execute permission for it to run, since the shell needs to be able to read it.

>`賦予腳本「執行」權限時也須賦予「讀」的權限，因為shell在執行時需要「讀」它。`
Merge pull request #19 from colorbook/master

中文翻譯新增
中文翻譯更新

Why not simply invoke the script with scriptname? 

>`為何不乾脆用腳本名來執行腳本就好？`
中文翻譯新增