Readme: writing IPTC + Exif metadata

Troi File Plug-in v3.5 introduced writing IPTC metadata to JPEG files and Troi File Plug-in v4.5 introduced writing Exif metadata to JPEG files.

Writing metadata in JPEGs is a powerful feature. Although we tested it thoroughly there might still be bugs in this version and also the plug-in might not do what you want.

IMPORTANT Please backup your JPEGs, use test images, and make sure the resulting image files are not corrupted!
Troi can not be held responsible for loss of (image) data!

Also note that this caveat only applies to writing metadata. Getting IPTC or Exif or XMP metadata only reads images and will not change them.

Also note:

• This feature currently only works with JPEGs. We have no plans to implement other file formats at this moment.
• Photoshop (or other programs) may have added other types of metadata, like XMP. These types of metadata are not changed by the plug-in at the moment.
  This may cause inconsistent metadata in the image file.

Please let us know if you find any issues with this feature.