Added demo receipt example

example/discover_printers/ios/Podfile.lock

 PODS:
   - Flutter (1.0.0)
+  - path_provider (0.0.1):
+    - Flutter
+  - path_provider_macos (0.0.1):
+    - Flutter
   - wifi (0.0.1):
     - Flutter
 
 DEPENDENCIES:
   - Flutter (from `Flutter`)
+  - path_provider (from `.symlinks/plugins/path_provider/ios`)
+  - path_provider_macos (from `.symlinks/plugins/path_provider_macos/ios`)
   - wifi (from `.symlinks/plugins/wifi/ios`)
 
 EXTERNAL SOURCES:
   Flutter:
     :path: Flutter
+  path_provider:
+    :path: ".symlinks/plugins/path_provider/ios"
+  path_provider_macos:
+    :path: ".symlinks/plugins/path_provider_macos/ios"
   wifi:
     :path: ".symlinks/plugins/wifi/ios"
 
 SPEC CHECKSUMS:
   Flutter: 0e3d915762c693b495b44d77113d4970485de6ec
+  path_provider: fb74bd0465e96b594bb3b5088ee4a4e7bb1f2a9d
+  path_provider_macos: f760a3c5b04357c380e2fddb6f9db6f3015897e0
   wifi: d7d77c94109e36c4175d845f0a5964eadba71060
 
 PODFILE CHECKSUM: 1b66dae606f75376c5f2135a8290850eeb09ae83

example/discover_printers/pubspec.yaml

@@ -15,6 +15,9 @@ dependencies:
   image: ^2.1.4
   esc_pos_printer:
     path: ../../
+  intl: ^0.16.1
+  qr_flutter: ^3.2.0
+  path_provider: ^1.6.5
   esc_pos_utils: ^0.3.3
   # esc_pos_utils:
     # path: ../../../esc_pos_utils
@@ -27,4 +30,5 @@ dev_dependencies:
 flutter:
   uses-material-design: true
   assets:
-    - assets/logo.png
\ No newline at end of file
+    - assets/logo.png
+    - assets/rabbit_black.jpg
\ No newline at end of file