add pattern for hidden files to .gitignore
add pattern for hidden files to .gitignore

TechWritingWhiz/indy-node,keenondrums/sovrin-node,keenondrums/sovrin-node,spivachuk/sovrin-node,TechWritingWhiz/indy-node,keenondrums/sovrin-node,spivachuk/sovrin-node,TechWritingWhiz/indy-node,spivachuk/sovrin-node,TechWritingWhiz/indy-node,spivachuk/sovrin-node