Update project README to add project usage

Signed-off-by: mukultaneja <[email protected]>

README.md

@@ -17,10 +17,22 @@
 1. pip install --user pyvcloud
 2. git clone https://github.com/vmware/ansible-module-vcloud-director
 3. cd ansible-module-vcloud-director
+4. ansible-playbook -i main.yml
+
+### Usage
+
+This reposiroty packaged below two components to manage VCD,
+
+1. Ansible Modules
+2. Ansbile Playbooks
+
+
+Ansible playbooks are the client which use modules as a gateway to interact with VCD. We have written various ansible playbooks to show how to interact with VCD. We are using [ansible roles](https://docs.ansible.com/ansible/latest/user_guide/playbooks_reuse_roles.html)
+to define playbooks in modular fashion for each module. Please refer [roles](https://github.com/vmware/ansible-module-vcloud-director/tree/master/roles) and [main.yml](https://github.com/vmware/ansible-module-vcloud-director/blob/master/main.yml) to see usage.
 
 ## Documentation
 
-Refer [docs](https://github.com/vmware/ansible-module-vcloud-director/wiki/vCD-Ansible-Modules) to know more about available modules's usage.
+Refer [docs](https://github.com/vmware/ansible-module-vcloud-director/wiki/vCD-Ansible-Modules) to know more about available modules and their usage.
 
 1. vcd_catalog
 2. vcd_catalog_item
@@ -40,15 +52,12 @@ Refer [docs](https://github.com/vmware/ansible-module-vcloud-director/wiki/vCD-A
 16. vcd_vdc_network
 17. vcd_gateway_services
 
-We have also written sample ansible playbooks to show usage of these ansible modules and their interaction with vCD instance. We are using [ansible role](https://docs.ansible.com/ansible/latest/user_guide/playbooks_reuse_roles.html)
-concept to define playbooks in modular fashion for these modules. Please refer [roles](https://github.com/vmware/ansible-module-vcloud-director/tree/master/roles) and [main.yml](https://github.com/vmware/ansible-module-vcloud-director/blob/master/main.yml) to see usage.
-
 ## Releases & Major Branches
 
 Following is the approx version matrix which are tested and supported through vCD ansible modules,
 
 | vCD Version    |  API Versions       |
-| -------------  | :-------------:     |
+| -------------  | -------------       |
 | vCD 9.0        | 29.0 			   |
 | vCD 9.1        | 30.0				   |
 | vCD 9.5        | 31.0                |