title: Can't commit changes to local git repository
body: <p>I have created a new project and checked the "create a local git repository" option. I opened the organizer to check that there is a repository for my project and it was there. I made some changes on some files, and noticed the source control specific letters "A" .. "M" beside them, but when I choose: File-> Source Control -> Commit, I get the following message from XCode 4.2: </p>
  
  <p><code>the operation could not be performed because no valid working copies were found</code> </p>
  
  <p><code>Please verify that your files are under source control and try again</code></p>
  
  <p>However, I opened the organizer again, and noticed that the repository of my project includes three icons on the left bar: Branches, Remotes and a folder with the same name as of the project. I chose the last one (the folder) and pressed the Commit button on the bottom bar of the organizer. The commit sheet opened and I performed the commit successfully. Now, when I close the organizer, and edit some files in my project, I do not see the source control specific letters "M" ... "A" ... beside each modified file.</p>
  
  <p>My problem is about two points:</p>
  
  <p>1) Why can't I commit from File->Source Control->Commit menu option</p>
  
  <p>2) When I commit from the repository itself, and go back to the project and edit some files, why do not I see source control letters beside modified files?]</p>