title: Changing Watchkit extension bundle id after renaming project
body: <p>After renaming my project from "apple watch company tutorial" to "Project x", i had some troubles, i solved some by checking this <a href="https://stackoverflow.com/a/30210346/1880500">answer</a>, and <a href="https://stackoverflow.com/a/28290992/1880500">this one</a></p>
  
  <p>iPhone Application Info.plist:</p>
  
  <pre><code>Bundle identifier: com.company.projectx
  </code></pre>
  
  <p>Watchkit Extension Info.plist:</p>
  
  <pre><code>Bundle identifier: com.company.projectx.watchkitextension
  
  WKAppBundleIdentifier: com.company.projectx.watchkitapp
  
  RemoteInterfacePrincipalClass: com.company.projectx.watchkitextension.InterfaceController
  </code></pre>
  
  <p>WatchKit App Info.plist</p>
  
  <pre><code>Bundle identifier: com.company.projectx.watchkitapp
  
  WKCompanionAppBundleIdentifier: com.company.projectx
  </code></pre>
  
  <p>my starter interface is named as InterfaceController</p>
  
  <p>but now i am having trouble</p>
  
  <pre><code> 2015-08-05 08:38:21.758 projectx WatchKit Extension[24714:1080879] WatchKit error - unable to find interface controller class '_TtC46Apple_Watch_Company_Tutorial_WatchKit_Extension19InterfaceController' to instantiate
  </code></pre>
  
  <p>I think my problem still related to renaming project and manually changing bundles , but i do not know what i am doing wrong.</p>