title: reading and writing to an iOS application document folder from extension
body: <p>I am developing an objective-c iOS application that has an action extension.  When the action extension loads I need to read some files from the documents directory of the host application and then write a file to the host applications document directory.  I have created an application group and both the application and the extension have that application group set.  But, after setting it I still not figure out how to read and write the files from the host applications document folder from the extension. Any ideas?</p>
  
  <p>Thanks,</p>
  
  <p>Josh</p>