Added explanation on how to stay in the cwd on death (#154)

Co-authored-by: flqd14ey2 <flqd14ey2@mozmail.com>

Author: Louis-Simon22

shell/README.md

@@ -135,3 +135,16 @@ cd () {
     rpg-cli battle
 }
 ```
+
+### Staying in the current work directory on death
+
+By default the shell integrations will send the user back to the home directory after death. To prevent this, we can change back to the current directory after each battle
+
+For example for cd:
+```sh
+cd () {
+    builtin cd "$@"
+    rpg-cli cd -f .
+    rpg-cli battle; rpg-cli cd -f .
+}
+```