Update README.md

README.md

@@ -1,5 +1,21 @@
 # AWX-PF
 
+## Setup
+Configure the external instance:
+
+```shell
+ssh -t your.external.tower.host <<-EOSH
+  sudo -i -u root
+  echo "CSRF_TRUSTED_ORIGINS = ['your.external.tower.host:443']" >> /etc/tower/settings.py
+  ansible-tower-service restart
+EOSH
+```
+Then update the project `webpack.config.js`:
+```diff
+- const TARGET = 'https://localhost:443';
++ const TARGET = 'https://your.external.tower.host:443';
+```
+
 ## Usage
 
 * `git clone git@github.com:ansible/awx-pf.git`
@@ -7,5 +23,3 @@
 * npm install
 * npm start
 * visit `https://127.0.0.1:3000/`
-
-**note:** You will need to update the configuration variables in the webpack config file to point to an external awx server.