this is how you add missing empty folders

upon fresh install .config/abook and .config/mpd/playlists and .cache/zsh is not created
because of it abook can't create a addressbook and returns a error when launched,
while ncmpcpp can't add songs to playlists as the folder doesn't exist,
and zsh doesn't create history because the folder doesn't exist

solved by adding a .gitignore in those folders and telling git to ignore all files in the folder except .gitignore

.cache/.gitignore

@@ -0,0 +1,6 @@
+# Ignore all files in this dir...
+*
+
+# ... except for this one.
+!.gitignore
+!zsh

.cache/zsh/.gitignore

@@ -0,0 +1,5 @@
+# Ignore all files in this dir...
+*
+
+# ... except for this one.
+!.gitignore

.config/abook/.gitignore

@@ -0,0 +1,5 @@
+# Ignore all files in this dir...
+*
+
+# ... except for this one.
+!.gitignore

.config/mpd/playlists/.gitignore

@@ -0,0 +1,5 @@
+# Ignore all files in this dir...
+*
+
+# ... except for this one.
+!.gitignore