Ask if user wants to overwrite already existing credentials
Ask if user wants to overwrite already existing credentials

braydonf/libstorj-c,aleitner/libstorj-c,braydonf/libstorj,braydonf/libstorj,aleitner/libstorj-c,Storj/libstorj-c,Storj/libstorj-c,braydonf/libstorj-c