title: Right use of ProjecKey, ProjectName and Branch
body: <p>I'm not sure if I understand correctly the use of parameters ProjectKey, ProjectName and branch in a sonarscanner analysis.</p>
  
  <p>Suppose that I have a project with diferents branches. When I run the analysis independently of the branch, the value for ProjectName and ProjectKey parameters has to be always the same?</p>
  
  <p>Or every branch analysis must have a different project key? What is the best practices in that case?</p>