docs(README): update installations

Author: diffy0712

README.md

@@ -28,20 +28,18 @@ None.
 ## Getting Started
 
 ### Install in playbook
-Install the role using ansible-galaxy:  
+ - __Using global ansible galaxy:__
 `ansible-galaxy install diffy0712.sysadmin_user_manager`
-
+ - __Using ansible galaxy requirements.yml:__
 Add to `requirements.yml`:  
 ```
 ---
 roles:
   - 'diffy0712.sysadmin_user_manager'
 ```
 Then run `ansible-galaxy install -r requirements.yml -p roles`  
-
-
-Or clone this repository:  
-`[email protected]:diffy0712/ansible-role-sysadmin-user-manager.git`
+ - __Using git:__
+`git clone [email protected]:diffy0712/ansible-role-sysadmin-user-manager.git`
 
 ### Define required variables