Highlighting for VimScript

Hi, I am a Textastic and Vim user.

I maintain my own vimrc on GitHub and use Textastic via WorkingCopy to edit it on iOS.

I have been using it for a long time and feel very comfortable with it. A slight gripe, however, is the lack of syntax highlighting in VimScript.

I would like to have syntax highlighting applied to *.vim and *.vimrc.

Thank you in advance.

PS: This sentence is using Deepl translation. Sorry if it's hard to understand.