Watches for images in selected directories and compile them into pdf document.

Steps:

1. Specify directories for listenning, a destination folder and a recovery directory in app.config file.
2. Specify patterns of files for listenning.
3. A barcode separator is in Test Data/Test files
4. It works in two modes to compile a pdf document: a) Waits for a file with a separator barcode; b) Waits for a pause for 12 seconds;