Import languages from Linguist

[jayvdb]

Create a script, any language, which must be checked into /tools/ in this repo and be run in Travis CI, which creates data files for any languages that are in Linguist https://github.com/github/linguist/blob/master/lib/linguist/languages.yml but are missing from coAST.

This would replace https://github.com/coala/coala/issues/4556 .

Try to include as much information from Linguist as possible, enhancing the local schema as needed.

[Anmolbansal1]

@jayvdb can I work on this issue?