zorba-node on linux

[kefo]

The changes to binding.gyp and example.js were necessary so that zorba-node worked on Ubuntu with a 'standard' Zorba installation (from the Juan repos).

On Redhat, I had to make custom changes to binding.gyp that are not portable, but the change to example.js was still required to get zorba-node to work on RedHat. Basically the string in this line

    zorba.execute("Hello from Zorba for Node"); 

Needed to be quoted, like this:

    zorba.execute("'Hello from Zorba for Node'"); 

I guess it must have worked on a Mac and Windows, but the test resulted in "error" on linux. Replaced it with Zorba's own "test" as seen here http://www.zorba.io/documentation/latest/zorba/build/build_and_install#testing_install