Readme updated. Added barcode commands

README.md

@@ -9,20 +9,21 @@ The library allows to print receipts using a ESC/POS (usually thermal) network p
 
 It can be used in [Flutter](https://flutter.dev/) or [Dart](https://dart.dev/) projects. In Flutter, both Android and iOS are supported.
 
-To discover existing printers in your subnet, consider using [ping_discover_network](https://pub.dev/packages/ping_discover_network) package. Note that most of ESC/POS printers by default listen on port 9100.
+To discover existing printers in your subnet, consider using [ping_discover_network](https://pub.dev/packages/ping_discover_network) package. Note that most of the ESC/POS printers by default listen on port 9100.
 
-## Features
+## Main Features
 
 * Connect to Wi-Fi printers
 * Simple text printing using *println* method
 * Tables printing using *printRow* method
 * Text styling:
-  * size, align, bold, reverse, underline, different fonts
+  * size, align, bold, reverse, underline, different fonts, turn 90°
+* Print images
 * Paper cut (partial, full)
 * Beeping (with different duration)
 * Paper feed, reverse feed
 
-**Note**: Your printer may not support some of presented features (especially for underline styles, partial/full paper cutting, reverse feed, ...).
+**Note**: Your printer may not support some of the presented features (especially for underline styles, partial/full paper cutting, reverse feed, ...).
 
 ## Getting Started
 
@@ -31,12 +32,16 @@ import 'package:esc_pos_printer/esc_pos_printer.dart';
 
 Printer.connect('192.168.0.123', port: 9100).then((printer) {
     printer.println('Regular: aA bB cC dD eE fF gG hH iI jJ kK lL mM nN oO pP qQ rR sS tT uU vV wW xX yY zZ');
-    printer.println('Special: àÀ èÈ éÉ ûÛ üÜ çÇ ôÔ',
+    printer.println('Special 1: àÀ èÈ éÉ ûÛ üÜ çÇ ôÔ',
         styles: PosStyles(codeTable: PosCodeTable.westEur));
+    printer.println('Special 2: blåbærgrød',
+        styles: PosStyles(codeTable: PosCodeTable.westEur));
+
     printer.println('Bold text', styles: PosStyles(bold: true));
     printer.println('Reverse text', styles: PosStyles(reverse: true));
     printer.println('Underlined text',
         styles: PosStyles(underline: true), linesAfter: 1);
+
     printer.println('Align left', styles: PosStyles(align: PosTextAlign.left));
     printer.println('Align center',
         styles: PosStyles(align: PosTextAlign.center));
@@ -84,7 +89,10 @@ import 'package:image/image.dart';
 
 const String filename = './logo.png';
 final Image image = decodeImage(File(filename).readAsBytesSync());
+// Using (ESC *) command
 printer.printImage(image);
+// Using an alternative obsolette (GS v 0) command
+printer.printImageRaster(image);
 ```
 
 ## TODO