more readme

.config/zsh/plugins/zsh-autosuggestions

@@ -0,0 +1 @@
+Subproject commit ae315ded4dba10685dbbafbfa2ff3c1aefeb490d

.gitmodules

@@ -0,0 +1,4 @@
+[submodule ".config/zsh/plugins/zsh-autosuggestions"]
+	path = .config/zsh/plugins/zsh-autosuggestions
+	url = https://github.com/zsh-users/zsh-autosuggestions.git
+	branch = master

README.md

@@ -52,6 +52,15 @@ dot add /path/to/file
 dot commit -m "some message"
 dot push
 ```
+## add 3rd party repositories or update them
+```sh
+#move to where you want to place the module
+# e.g. .config/zsh/plugins
+dot submodule add -b master https://github.com/PATH/TO.git
+
+#update submodules
+dot submodule update --remote
+```
 ## move to a new computer
 ```sh
 cd