Add Ocaml module

Manage local Ocaml modules with OPAM.

Signed-off-by: Sorin Ionescu <sorin.ionescu@gmail.com>

modules/README.md

@@ -86,6 +86,11 @@ Node.js
 
 Provides utility functions for Node.js and loads npm completion.
 
+Ocaml
+-----
+
+Initializes Ocaml package management.
+
 OSX
 ---
 

modules/ocaml/README.md

@@ -0,0 +1,28 @@
+Ocaml
+=====
+
+Initializes [Ocaml][1] package management.
+
+OPAM
+----
+
+[OPAM][2] is a package manager for Ocaml.
+
+This module enables local package installation with OPAM by extending the
+relevant path and Ocaml variables.
+
+### Usage
+
+Install packages to your local package directory with `opam install`.
+
+Authors
+-------
+
+*The authors of this module should be contacted via the [issue tracker][3].*
+
+  - [Sebastian Wiesner](https://github.com/lunaryorn)
+
+[1]: http://ocaml.org/
+[2]: http://opam.ocamlpro.com/
+[3]: https://github.com/sorin-ionescu/prezto/issues
+

modules/ocaml/init.zsh

@@ -0,0 +1,15 @@
+#
+# Initializes Ocaml package management.
+#
+# Authors:
+#   Sebastian Wiesner <lunaryorn@gmail.com>
+#
+
+# Return if requirements are not found.
+if (( ! $+commands[opam] )); then
+  return 1
+fi
+
+# Initialize OPAM.
+eval "$(opam config env)"
+