adding a licence

README.md

-[licence CC-BY-SA](https://licensebuttons.net/l/by-nc/4.0/88x31.png)
+
+[![alt](https://licensebuttons.net/l/by-nc/4.0/88x31.png)](https://creativecommons.org/licenses/by-nc/4.0/legalcode)
 
 # Ansible deployment for AIDMOIt
 
-This project aims to deploy a datalake and its ecosystem using  **[Ansible](https://docs.ansible.com/)** and **[Vagrant](https://www.vagrantup.com/)**.
+This project aims to deploy a datalake and its ecosystem using  **[Ansible](https://docs.ansible.com/)** and/or **[Vagrant](https://www.vagrantup.com/)**.
 
 Acutally, this project does :
 - **Prod Environment** : Deploy a mononode HDFS on a server using ansible