updating dir structure in the README

README.md

@@ -82,23 +82,31 @@ Example users are in the `vars/secure` directory:
 * [*admin_users* will be realized on every server](/vars/secure/users.yml)
 
 
-     ```
+```
+cloudformation_templates  <-- official edX cloudformation templates
+│   └── examples          <-- example templates
+└── playbooks
      edxapp_prod.yml      <-- example production environment playbook
      edxapp_stage.yml     <-- example stage environment playbook
      edxapp_custom.yml    <-- example custom environment playbook
-     ├── files            <-- edX cloudformation templates
-     │   └── examples     <-- example cloudformation templates
-     ├── group_vars       <-- var files that correspond to ansible group names (mapped to AWS tags)
-     ├── keys             <-- public keys
-     ├── roles            <-- edX services
-     │   ├── common       <-- tasks that are run for all roles
-     │   │   └── tasks
-     │   └── lms 
-     │       ├── tasks    <-- tasks that are run to setup an LMS
-     │       └── templates
-     └── vars             <-- public variable definitions
-         └── secure       <-- secure variables (example)
-     ```
+    ├── files             <-- edX cloudformation templates
+    │   └── examples      <-- example cloudformation templates
+    ├── group_vars        <-- var files that correspond to ansible group names (mapped to AWS tags)
+    ├── keys              <-- public keys
+    ├── roles             <-- edX services
+    │   ├── common        <-- tasks that are run for all roles
+    │   │   └── tasks
+    │   ├── lms
+    │   │   ├── tasks     <-- tasks that are run to setup an LMS
+    │   │   └── templates
+    │   └── nginx
+    │       ├── handlers
+    │       ├── tasks
+    │       └── templates
+    └── vars             <-- public variable definitions
+        └── secure       <-- secure variables (example)
+
+```
 
 
 ### Installation