Update README.md

Author: Mohammad Heriyanto

README.md

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 ![GitHub language count](https://img.shields.io/github/languages/count/modeling-inversion-lab/2D-Magnetic-Inversion)
 ![GitHub top language](https://img.shields.io/github/languages/top/modeling-inversion-lab/2D-Magnetic-Inversion)
 
+![GitHub repo size](https://img.shields.io/github/repo-size/modeling-inversion-lab/2D-Magnetic-Inversion)
+![GitHub code size in bytes](https://img.shields.io/github/languages/code-size/modeling-inversion-lab/2D-Magnetic-Inversion)
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 # 2D-Magnetic-Inversion
 **Last update**: September 14, 2019