Added a config.plist to Sample
IOS7 compatibility and bug fixes

Use NSURLSessionConfiguration backgroundSessionConfiguration to make it compatible with ios 7

Explicitly set:
  [request setAllowsCellularAccess:YES];
  [request setNetworkServiceType:NSURLNetworkServiceTypeBackground];
in FileTransferAgents

Bug fix OBFileTransferTaskManager.instance set myQueue before initialize
Changed target from 7.1 to 7.0
Added currentTransferWithCompletionHandler to FileTransferManager
Removed my changes for setAllowsCellularAccess from agents as farhad coded this in fileTransfer manager for requests returned by all agents. Updated farhads code in file transferManger so that setAllowsCellular access is set for both upload as well as download requests.
Allow noTvm operation with S3
 x AmazonClientManager
   x If S3TvmServerUrlParam is provided then use tvm
   x If S3TvmServerUrlParam is not provided then use noTvmCredentials provided in configuration. Return an s3 client with those credentials.
     (this is the case I will use in Zazo. Our own server will provide the app with credentials it will pass in configuration.)
   x If S3TvmServerUrlParam is not provided and the noTvmCredentials are not provided in config return s3Client without credentials. (Publicly readable and writable s3 bucket)
All 4xx errors are now permanent failures.
Delete method added and implemented in the case of S3
Point back to Farhads Test Server