Flipboard-like update checker

A Flipboard-like update checker.

1. Copy in your project classes SMUpdateNotifier, SMURLConnection and protocol SMUpdaterDelegate

2. Upload a file to a web server and set the value of REMOTE_VERSION_FILE
   File should contain just the version number, e.g. 1.2

3. Set the value of APP_NAME

4. Whenever you like to check for a new version just use this code.

   SMUpdateNotifier *n = [[SMUpdateNotifier alloc] initWithDelegate:self];
[n checkIfNewVersionExists];

5. Your class should implement the SMUpdaterDelegate, which has three delegate methods

   -(void) newVersionExists:(NSString *)versionNumber
-(void) thereIsNoNewVersion
-(void) requestFailedwithError:(NSError *) error
   

Names should be pretty self-explanatory :)

Check out the code in the application delegate to see an example.