add ocaml language

[fdelbos]

What does this implement/fix? Explain your changes.

Adds support for OCaml language indentation

Does this close any currently open issues?

no

Any other comments?

ocp-indent must be installed:

brew install ocaml opam
opam install ocp-indent

Checklist

Check all those that are applicable and complete.

• Merged with latest master branch
• Added examples for testing to examples/ directory
• Travis CI passes (Mac support)
• AppVeyor passes (Windows support)

[mention-bot]

By analyzing the blame information on this pull request, we identified @fscherwi, @diegodorado and @splodingsocks to be potential reviewers

[Glavin001]

Published to v0.29.7

[AllanWang]

Given the checkboxes above, I presume this isn't compatible with windows?

[stevenzeck]

The checkboxes are for the test scripts. It should work on Windows, I'd have to find where you can download and install OCaml/opam for Windows, give me a bit.

[AllanWang]

@szeck87

https://fdopen.github.io/opam-repository-mingw/

It's there. But I'm not sure how to link it

[AllanWang]

@szeck87 any luck?

I've managed to install ocp-indent, but it is under C:\OCaml64\home\[user]\.opam\4.03.0+mingw64\bin.
where.exe ocp-indent will only find the path in the ocaml terminal, and not in the powershell, and as far as I'm aware, there's no location to specify file paths in beautify

[stevenzeck]

Sorry was working on a different issue. Let me fire up my PC and install ocaml/opam and try.

[stevenzeck]

Sorry, I tried for an hour and couldn't get it. I would reach out to the maintainers of ocaml and ask how to install it and any packages for use in Windows.