Support the tokenisation for latex delimiters \( \) and \[ \]

[Jieli12]

[yzhang-gh]

Thanks for the PR.

However, I cannot understand the git diff, which shows the two .tmLanguage.json are brand new. (Also, please keep only necessary changes to the package.json).

[Jieli12]

Hi Yu,

I have reformatted the package.json. The added two new .tmLanguage.json files are for tokenisations of ( ) and [ ] respectively. I tried to combine them together with the original ones but failed. I am not an expert in this field. If you have more compact way，please let me know.

[yzhang-gh]

Thanks. I will have a look this weekend.