diff --git a/README.md b/README.md
index 42f9095..a01895e 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,14 @@
 # swline
 
-Cute shell
\ No newline at end of file
+Cute shell  
+add this to your bashrc I guess  
+
+```bash
+function _update_ps1() {
+    PS1=$(swline $?)
+}
+
+if [[ $TERM != linux && ! $PROMPT_COMMAND =~ _update_ps1 ]]; then
+    PROMPT_COMMAND="_update_ps1; $PROMPT_COMMAND"
+fi
+```
\ No newline at end of file