Merge pull request pklaus#17 from DL6ER/new/highres

Update README

Author: DL6ER

README.md

@@ -64,6 +64,7 @@ Additional printer support comes from [matmair/brother_ql-inventree](https://git
     - **QL-1100**
     - **QL-1110NWB**
     - **QL-1115NWB**
+-   High-resolution (600dpi) printing support
 -   Support individual fonts/sizes and spacing for each line of text on the labels
 -   Dynamic content replacement, e.g., using `{{datetime}}` and `{{counter}}` templates
 -   Import and export of labels in an easily editable format (JSON)