title: Xcode build error Linker command failed with exit code 1 (use -v to see invocation)
body: <p>I am opening up an existing project in xcode 7.2. I'm getting the following error:</p>
  <blockquote>
  <p>Library not found for -lBolts</p>
  <p>Linker command failed with exit code 1 (use -v to see invocation)</p>
  </blockquote>