刪除原先舊的README文件。
Merge pull request #3 from xu-zan/master

Merge pull request #2 from xu-zan/Studying_Objective_C_Programming
測試Objective-C programming language的標量數據類型及其占用內存的大小, 還有各個數據類型能表示的最小值與最小值。
Merge pull request #4 from xu-zan/Studying_Objective_C_Programming

Okay!