Add gitignore file.
Add gitignore file.

smr547/agdc,sixy6e/agdc,jeremyh/agdc,alex-ip/agdc,sixy6e/agdc,smr547/agdc,GeoscienceAustralia/agdc,ama-jharrison/agdc,alex-ip/agdc,GeoscienceAustralia/agdc,ama-jharrison/agdc,jeremyh/agdc