title: add new Project to existing github Repo
body: <p>I am developing a Client-Server application and I want to store both projects (Client and Server) on github the same github repo.
  I am on macosx.
  I created a local repository for the client side project with Eclipse git plugin and then I committed it to github. It worked fine.</p>
  
  <p>Now I want to add to this Repo the server side project possibly inside a new subfolder. This part is developed on a different workspace than the client part. I tried to share the project using Eclipse, but it tells me there is no existing repo. I think this is because the two parts of the system are developed with different Eclipse IDEs.</p>
  
  <p>I tried to create a new repo under the first one, but it became a great mess because github couldn't understand which was the master.
  I am using the GitHub client application to manage commits to the remote repo.</p>
  
  <p>Someone can help me?</p>
  
  <p>Thanks</p>