Update README.md

Updated README.md

## Bug Fixes

* Fixed status label on 'Adding to existing playlists'
* Tinkered with FileSystemWatcher - Sometimes it's not grabbing file system changes
* Hopefully fixed object reference not set to an instance of an object in Playlist Processor

### No Changes

* No improvements, just trying to trouble shoot the playlist upload issue.

### Bug Fixes

* Fixed issue where main processes continually runs when not all playlists have been processes
* Added additional logging for playlists processing - Attempting to troubleshoot 'object instance not set to an instance of an object' a few people are getting trying to upload their playlists

### Bug Fixes

* Handle playlist without subtitle
* UI now works (more or less) properly with Windows increased dpi scaling (125%, 150%)

### Changes
* Don't bother sending diagnostic data if application out of date - No point reporting already fixed issues

Multi thread count (max) now based on system CPU cores for better res…

…ource optimisation.

### Changes

* Depriorities log messages for playlists issues where either playlist file is empty (no paths included), YTM playlist quoto reached, or invalid paths in playlists (as not YTM Uploader issues). They're now warnings not errors.
* Added logo to banner of installers

### Bug fixes

* Where there's an invalid path in the playlists, it was stopping uploading the entire playlist, not just the problematic file.

## Minor Release

### Changes
* Changed playlist schedule upload to 24 hours from 12 - Was still getting errors when exceeding playlist creation quota - Can be configured in app.config

### Enhancements
* Added 'reset all' button to issues log form

### Bugs
* Reset individual issues button not always working after gridview refresh due to changing column index of the button. This has been rectified.

### Additional
* Regenerated Doxygen XMLdoc source code documentation.

Idle image update