Add OCaml link to implementations list.

doc/otherlang.md

@@ -20,6 +20,7 @@ maintained by respective authors and have not been reviewed by me
 * [C](https://github.com/jmckaskill/c-capnproto) by [@jmckaskill](https://github.com/jmckaskill)
 * [Erlang](http://ecapnp.astekk.se/) by [@kaos](https://github.com/kaos)
 * [Go](https://github.com/jmckaskill/go-capnproto) by [@jmckaskill](https://github.com/jmckaskill)
+* [OCaml](https://github.com/pelzlpj/capnp-ocaml) by [@pelzlpj](https://github.com/pelzlpj)
 * [Ruby](https://github.com/cstrahan/capnp-ruby) by [@cstrahan](https://github.com/cstrahan)
 * [Rust](https://github.com/dwrensha/capnproto-rust) by [@dwrensha](https://github.com/dwrensha)