Fix readme which referenced wrong role name

Author: Tompage1994

README.md

@@ -131,28 +131,28 @@ $ ansible-playbook playbook.yml -e @tower_vars.yml tower
 # Playbook to install Ansible Tower as a single node
 
 - name: Setup Ansible Tower
-  hosts: awx
+  hosts: tower
   become: true
   vars:
     tower_manage_tower_releases_url: https://releases.ansible.com/ansible-tower/setup-bundle
     tower_manage_tower_release_version: bundle-3.6.3-1.tar.gz
   tasks:
     - include_role:
-        name: ansible-deploy-awx
-        tasks_from: "{{awx_tasks}}.yml"
+        name: ansible-tower-manage
+        tasks_from: "{{tower_tasks}}.yml"
       loop:      # Include  specific task file
         - tower_install
         - tower_license
       loop_control:
-        loop_var: awx_tasks
+        loop_var: tower_tasks
 ```
 
 ```yaml
 ---
 # Playbook to install Ansible Tower as a cluster
 
 - name: Setup Ansible Tower
-  hosts: awx
+  hosts: tower
   become: true
   vars:
     tower_hosts:
@@ -161,21 +161,21 @@ $ ansible-playbook playbook.yml -e @tower_vars.yml tower
     tower_database_port: "5432"
   tasks:
     - include_role:
-        name: ansible-deploy-awx
-        tasks_from: "{{awx_tasks}}.yml"
+        name: ansible-tower-manage
+        tasks_from: "{{tower_tasks}}.yml"
       loop:      # Include  specific task file
         - tower_install
         - tower_license
       loop_control:
-        loop_var: awx_tasks
+        loop_var: tower_tasks
 ```
 
 ```yaml
 ---
 # Playbook to seed Ansible Tower
 
 - name: Setup Ansible Tower
-  hosts: awx
+  hosts: tower
   become: true
   vars:
     tower_manage_tower_custom_virtualenv_path_per_team_jobs:
@@ -275,8 +275,8 @@ $ ansible-playbook playbook.yml -e @tower_vars.yml tower
                   - job_template: "Demo Job Template"
   tasks:
     - include_role:
-        name: ansible-deploy-awx
-        tasks_from: "{{awx_tasks}}.yml"
+        name: ansible-tower-manage
+        tasks_from: "{{tower_tasks}}.yml"
       loop:      # Include  specific task file
         - tower_create_venv
         - tower_orgs
@@ -286,7 +286,7 @@ $ ansible-playbook playbook.yml -e @tower_vars.yml tower
         - tower_job_credential
         - tower_workflow
       loop_control:
-        loop_var: awx_tasks
+        loop_var: tower_tasks
 ```
 ```yaml
 ---
@@ -317,11 +317,11 @@ $ ansible-playbook playbook.yml -e @tower_vars.yml tower
 
     - include_role:
         name: ansible-tower-manage
-        tasks_from: "{{awx_tasks}}.yml"
+        tasks_from: "{{tower_tasks}}.yml"
       loop:      # Include  specific task file
         - tower_ldap
       loop_control:
-        loop_var: awx_tasks
+        loop_var: tower_tasks
 ```
 
 Testing