title: NativeScript CLI fail when running "tns run ios"
body: <p>I'm practicing with this new programming framework called NativeScript, which allows creating native apps using JS. However, when I started working on the Hello World tutorial, I got this error:</p>
  
  <p><a href="https://gist.github.com/longpham91/d603c8fe7f6c6b06e86f" rel="nofollow noreferrer">https://gist.github.com/longpham91/d603c8fe7f6c6b06e86f</a></p>
  
  <p>The error occurred when I tried running command "tns run ios" on Terminal, which basically allowed NativeScript to run HelloWorld app on my phone.</p>
  
  <p>I also looked at the error log, and it seemed that the error might have something to do with my Xcode device settings, as explained here:</p>
  
  <blockquote>
    <p>Check dependencies Code Sign error: No code signing identities found:
    No valid signing identities (i.e. certificate and private key pair)
    matching the team ID “(null)” were found. CodeSign error: code signing
    is required for product type 'Application' in SDK 'iOS 8.4'</p>
  </blockquote>
  
  <p>I'm not sure what this means, though.</p>