Easy Way to Migrate CSS Bootstrap 2.x to 3.x, Font Awesome v3 to v4

The old web app uses CSS Bootstrap 2 and the new CSS Bootstrap 3 have a lot of things different, we need to aware: Get into the issue/concept: My Working Tool There is already an existing tool written in Python (b2tob3) but for me, it’s working only for HTML (extension .html) files and…