// Define your key and template id (this should probs get stored as a constants or something, ya know?)
NSString *key = @"<your-key>";
NSString *templateId = @"<your-template-id>";

// Create your data and mime type (we are using an image here)
NSData *imageData = UIImageJPEGRepresentation(self.imageToUpload, 0.6f);
NSString *mimeType = @"image/jpg";

// Create your TransloaditRequestOperation (its a subclass of AFHTTPRequestOperation) by passing in your awesome data from above
TransloaditRequestOperation *requestOperation = [[TransloaditRequestOperation alloc] initWithKey:key withTemplateId:templateId withData:imageData withMimeType:mimeType];

// Set the upload progress block
[requestOperation setUploadProgressBlock:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {
    CGFloat progress = (float)totalBytesWritten / (float)totalBytesExpectedToWrite;
    NSLog(@"Progress - %f", progress);
}];

// Set the completion blocks - cause this is what its all about
[requestOperation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"Success - %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error - %@", error);
}];

// Add the operation to the queue to get things going
[[NSOperationQueue mainQueue] addOperation:requestOperation];