From 7edc0233fe7eba04361221f6baf9750f9c18dd04 Mon Sep 17 00:00:00 2001
From: oGre <oGre@muppfarmen.se>
Date: Tue, 6 Oct 2015 17:36:52 +0200
Subject: [PATCH] Updated documentation

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index 09a24f9..278de6f 100644
--- a/README.md
+++ b/README.md
@@ -200,6 +200,10 @@ function prompt_callback {
 }
 ```
 
+- There are two helper functions that can be used within `prompt_callback`:
+    - `gp_set_window_title <String>` - sets the window title to the given string (should work for XTerm type terminals like in OS X or Ubuntu)
+    - `gp_truncate_pwd` - a function that returns the current PWD truncated to fit the current terminal width
+
 - If you want to show the git prompt only if you are in a git repository you
   can set ``GIT_PROMPT_ONLY_IN_REPO=1`` before sourcing the gitprompt script