Updated the README (#4060)
Updated the README (#4060)

* Add a curl command for the complie.sh script
* Improve status shields
* Comply with the commonmark spec
mc-server/MCServer,nounoursheureux/MCServer,mc-server/MCServer,nounoursheureux/MCServer,nounoursheureux/MCServer,nounoursheureux/MCServer,mc-server/MCServer,mc-server/MCServer,nounoursheureux/MCServer,nounoursheureux/MCServer,mc-server/MCServer,mc-server/MCServer