title: read local html file and show on webview
body: <p>I have been able to read a file called 'exerciseA.htm' from a live url. but now i need to bring the file locally add it to the project and read it from there. I have dragged the file into xcode to add it. Now i need to read its contents to a string, however the following doesnt seem to work:   </p>
  
  <pre><code>NSString* exerciseAPage =  [[NSString alloc] initWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"exerciseA" ofType:@"htm"] encoding:NSUTF8StringEncoding error:&amp;error];
      [exerciseWebViewA loadHTMLString:exerciseAPage baseURL:nil];
  </code></pre>
  
  <p>Is this the correct way to load local htm file to a webview?</p>