Maximal node version for ocap support

[pbruneau]

I'm interested in setting up the ocap support, and the example script ocap_tests.js happens to run fine with 0.10.x versions (e.g. OK with 0.10.18 in my case), but apparently fails with 0.11.x (0.11.13 in my case). The error occurs line 13 of ocap_tests.js - funs is undefined at this point, for a reason lying deep in the ocap function I expect...

It's OK for me to use 0.10.x for now, but I guess at some point dependencies will push me towards 0.11.x.

[s-u]

Latest node to date (7.5.0) works fine - if in doubt please use the latest rserve-js from https://github.com/att/rserve-js