Investigators Companion
 

Has anyone got a data file for the 1920's Investigators Companion? I'm primarily after the Occupations from Vol 2.
If no-one has done this, I might have to start coding it myself.

The Occupations haven't even been added for the Investigators Handbook, only the Keepers Guide as far as I can tell.

I've started adding them for my own use, but I'm not motivated enough to do more than 1-2 a week.

How easy is to add the missing information from the Investigator's handbook? I.e. skills, occupations and items? Do I have to purchase Authoring kit or mess with xml and script files?

The Cthulhu data set already exists, so you would use the editor to add more material. (The Authoring Kit is for completely new systems.)
Adding skills and items should be very easy. Occupations would take a little more work. I would still like to do this, but a year after my original post I haven't started.

Is there example how to add new Occupations?

Essentially: no there isn't. But it shouldn't be too difficult.
Open the Editor, click on the "Occupations" tab and then click the "New (Copy)" button - choose an existing occupation and you can look at how it was put together. Then either make a new one using "New (Blank)" or alter a copy of an existing to get what you need.