Added example image and more screenshots

README.md

 mind. It provides clean interface for distraction-free editing. Think
 Medium.com-like experience.
 
-<img src="https://github.com/memspace/zefyr/raw/master/zefyr.png" width="375">
+<img src="https://github.com/memspace/zefyr/raw/master/zefyr-1.png" width="375"> <img src="https://github.com/memspace/zefyr/raw/master/zefyr-2.png" width="375">
 
 ## Markdown-inspired semantics
 

packages/zefyr/example/lib/main.dart

 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 import 'dart:convert';
+import 'dart:io';
 
 import 'package:flutter/material.dart';
 import 'package:quill_delta/quill_delta.dart';
 }
 
 final doc =
-    r'[{"insert":"Zefyr"},{"insert":"\n","attributes":{"heading":1}},{"insert":"​","attributes":{"embed":{"type":"hr"}}},{"insert":"\n"},{"insert":"Soft and gentle rich text editing for Flutter applications.","attributes":{"i":true}},{"insert":"\nZefyr is currently in "},{"insert":"early preview","attributes":{"b":true}},{"insert":". If you have a feature request or found a bug, please file it at the "},{"insert":"issue tracker","attributes":{"a":"https://github.com/memspace/zefyr/issues"}},{"insert":'
+    r'[{"insert":"Zefyr"},{"insert":"\n","attributes":{"heading":1}},{"insert":"Soft and gentle rich text editing for Flutter applications.","attributes":{"i":true}},{"insert":"\n"},{"insert":"​","attributes":{"embed":{"type":"image","source":"asset://images/breeze.jpg"}}},{"insert":"\n"},{"insert":"Photo by Hiroyuki Takeda.","attributes":{"i":true}},{"insert":"\nZefyr is currently in "},{"insert":"early preview","attributes":{"b":true}},{"insert":". If you have a feature request or found a bug, please file it at the "},{"insert":"issue tracker","attributes":{"a":"https://github.com/memspace/zefyr/issues"}},{"insert":'
     r'".\nDocumentation"},{"insert":"\n","attributes":{"heading":3}},{"insert":"Quick Start","attributes":{"a":"https://github.com/memspace/zefyr/blob/master/doc/quick_start.md"}},{"insert":"\n","attributes":{"block":"ul"}},{"insert":"Data Format and Document Model","attributes":{"a":"https://github.com/memspace/zefyr/blob/master/doc/data_and_document.md"}},{"insert":"\n","attributes":{"block":"ul"}},{"insert":"Style Attributes","attributes":{"a":"https://github.com/memspace/zefyr/blob/master/doc/attr'
     r'ibutes.md"}},{"insert":"\n","attributes":{"block":"ul"}},{"insert":"Heuristic Rules","attributes":{"a":"https://github.com/memspace/zefyr/blob/master/doc/heuristics.md"}},{"insert":"\n","attributes":{"block":"ul"}},{"insert":"FAQ","attributes":{"a":"https://github.com/memspace/zefyr/blob/master/doc/faq.md"}},{"insert":"\n","attributes":{"block":"ul"}},{"insert":"Clean and modern look"},{"insert":"\n","attributes":{"heading":2}},{"insert":"Zefyr’s rich text editor is built with simplicity and fle'
     r'xibility in mind. It provides clean interface for distraction-free editing. Think Medium.com-like experience.\nMarkdown inspired semantics"},{"insert":"\n","attributes":{"heading":2}},{"insert":"Ever needed to have a heading line inside of a quote block, like this:\nI’m a Markdown heading"},{"insert":"\n","attributes":{"block":"quote","heading":3}},{"insert":"And I’m a regular paragraph"},{"insert":"\n","attributes":{"block":"quote"}},{"insert":"Code blocks"},{"insert":"\n","attributes":{"headin'
           controller: _controller,
           focusNode: _focusNode,
           enabled: _editing,
+          imageDelegate: new CustomImageDelegate(),
         ),
       ),
     );
     });
   }
 }
+
+/// Custom image delegate used by this example to load image from application
+/// assets.
+///
+/// Default image delegate only supports [FileImage]s.
+class CustomImageDelegate extends ZefyrDefaultImageDelegate {
+  @override
+  ImageProvider createImageProvider(String imageSource) {
+    // We use custom "asset" scheme to distinguish asset images from other files.
+    if (imageSource.startsWith('asset://')) {
+      return new AssetImage(imageSource.replaceFirst('asset://', ''));
+    } else {
+      return super.createImageProvider(imageSource);
+    }
+  }
+}

packages/zefyr/example/pubspec.yaml

   uses-material-design: true
 
   # To add assets to your application, add an assets section, like this:
-  # assets:
-  #  - images/a_dot_burr.jpeg
-  #  - images/a_dot_ham.jpeg
+  assets:
+    - images/breeze.jpg
 
   # An image asset can refer to one or more resolution-specific "variants", see
   # https://flutter.io/assets-and-images/#resolution-aware.