Fix finding left-hook binary under node_modules

No matter what package manager is used, the binaries will be always under node_modules/.bin.

The previous script only worked with "npm" which hoists the dependencies to node_modules.

It also fixes finding binaries for the cases where $dir has spaces in it

cmd/templates/hook.tmpl

@@ -15,9 +15,9 @@ call_lefthook()
   if lefthook -h >/dev/null 2>&1
   then
     eval $1
-  elif test -f "$dir/node_modules/@arkweid/lefthook/bin/lefthook"
+  elif test -f "$dir/node_modules/.bin/lefthook"
   then
-    eval $dir/node_modules/@arkweid/lefthook/bin/$1
+    eval "$dir/node_modules/.bin/$1"
   elif bundle exec lefthook -h >/dev/null 2>&1
   then
     bundle exec $1