-#manual git-fat init: with relative path to binary
-#1] remove filter if exists http://stackoverflow.com/questions/12179437/replace-3-lines-with-another-line-sed-syntax
-sed -i '1N;$!N;s/\[filter "fat"\]\n.*\n.*//;P;D' .git/config
-#2] place new filter
-printf '[filter "fat"]\n\tclean = ./.git-fat/git-fat filter-clean\n\tsmudge = ./.git-fat/git-fat filter-smudge\n' >> .git/config