title: Initializing git flow in existing repository
body: <p>I already have an existing repository with a couple of branches. Right now I have to initialize git flow here, using the source tree. But when I click on "git flow" button, and it tries to initialize the git flow, I get the following error:</p>
  
  <pre><code>sh.exe C:\Users\Foo\AppData\Local\Atlassian\SourceTree\gitflow_local\gitflow\git-flow init -d
  fatal: Working tree contains unstaged changes. Aborting.
  
  Completed with errors, see above.
  </code></pre>
  
  <p>I used git pull and git push on every branch, no uncommited changes...What's wrong?</p>
  
  <p>Also, won't using git flow command on existing repo delete any files?</p>