title: Cordova File plugin FileReader.readAsText gets error but does not call error callback
body: <p>I am using Cordova File plugin to read a JSON on local filesystem. It works perfectly except for some file where I get an error :</p>
  
  <pre><code>SyntaxError: Unexpected EOF
  </code></pre>
  
  <p>These files probably have wrong characters and I need to fix them but my problem is not there. My problem is that the plugin logs the error (on the javascript side) but never calls any error callback !!!</p>
  
  <p>When I debug and I follow step by step, on the javascript side I get to the exec() command in FileReader.js, I then follow step by step in objectiveC and it seems perfectly fine, but when ObjectiveC returns it results back with its sendPluginResult, I get this error message in javascript console and no error callback is thrown....</p>
  
  <p>Anybody ever experienced this ? Any idea to catch the error ?</p>
  
  <p>Thank you very much.</p>