setup_rustfmt_hook: create hooks dir if it doesn't exist

Signed-off-by: Russell Currey <[email protected]>
Signed-off-by: Andrew Donnellan <[email protected]>

Author: ruscur

setup_rustfmt_hook.sh

@@ -2,6 +2,7 @@
 rustup component add rustfmt-preview
 
 rustfmt_path=`which rustfmt`
+mkdir -p .git/hooks
 echo "#!/bin/bash
 declare -a rust_files=()
 files=\$(git diff-index --name-only HEAD)