Fixed OCaml support.

[firefish111]

Currently, OCaml support is broken and displays this:

This is because ocamlc -o main is running, which compiles the OCaml code. But it is expecting another argument which it isn't receiving. A solution would be to interpret it as ocaml main.ml (the solution in the pull request) or

ocamlc -o main main.ml
rm *.cmi *.cmo