title: Importing <AppKit/AppKit.h> does not work
body: <p>I am making a cydia tweak on Xcode using IOSOpenDev and i  tried to import <code>&lt;AppKit/AppKit.h&gt;</code> but i'm getting this error!<br>
  <code>'AppKit/AppKit.h' file not found'</code><br>
  This is my code which changes the flash color when someone tries to take a screenshot</p>
  
  <pre><code>#include &lt;AppKit/AppKit.h&gt;
  
  %hook SBScreenFlash
  
  -(void)flashColor:(id)color {
  
  NSDictionary *prefs=[[NSDictionary alloc] initWithContentsOfFile:@"/var/mobile/Library/Preferences/com.junyi00.screenshotcolor.plist"];
  
  if ([[prefs objectForKey:@"enable"] boolValue]){
      color = [NSColor blueColor];
      %orig(color); }
  else {
      %orig; }
  }
  
  %end
  </code></pre>
  
  <p>I looked into <code>opt/IOSOpenDev/include</code> and <code>opt/theos/include</code> and was unable to find <code>AppKit.h</code><br>
  How do i fix this problem? Please help</p>