Add .gitignore file.
Add .gitignore file.

wlanslovenija/babeld,wlanslovenija/babeld,Drooids/babeld,tcatm/babeld,boutier/babeld,sudomesh/babeld,jech/babeld,Gwendocg/babeldToS,woniullb/babeld,dtaht/babeld-shortrtt-metrics,Gwendocg/babeldToS,jech/babeld