title: Xcode Find and replace in all project files
body: <p>I need to replace <code>NSLog</code> with <code>DDLogVerbose</code> in all files in the current project I am working on… What is an easy method to do this? (the search navigator only has search in it).</p>
  
  <p>Also I need to add a line at the beginning of all .m files. How is this done quickly? (There are over 500 such files.)</p>