TypeScript first line matching added.

[pouyakary]

As when you write node CLI software you have to include the UNIX header !# /bin/.. now TypeScript had no such support for that. Made a pull request for that in the TypeScript.tmLanguage repository but it seems that it's somehow out of maintenance and no one noticed it (also I see that my additions have syntax issues...) so I made a same change here with correct syntax and stuff.

As always hope it have helped.
Have so much fun!
Pouya

[msftclas]

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[msftclas]

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[coveralls]

Coverage remained the same at 62.509% when pulling 3d18b25 on pmkary:pouya/typescript-first-line-matching into 3efdbfd on Microsoft:master.

[aeschli]

https://github.com/Microsoft/TypeScript-TmLanguage is the correct place for change requests to the tmLanguage files.

However, VSCode does not read the firstLine matches from tmLanguage files. This has to be configured in
https://github.com/Microsoft/vscode/blob/master/extensions/typescript/package.json#L38