Update README.md

README.md

 # shell-config
 
+This repository contains the Bash shell configuration in (`.bash-reit`). 
+
+Note: This assumes that your `~/.bashrc` is sourced at login. If that is not the case you have to source it manually or add it to the your `~/.pofile`.
+
+```
+# ~/.profile
+source ~/,bashrc
+```
+
 ## Download and install
 ### Bash
 ```