Add images and examples to Align #13637
Description
Steps to Reproduce
https://docs.flutter.io/flutter/widgets/Align-class.html just one of many:
Its would be helpful in general if those widget description have some small reusable snippets in them and a Picture how it would look like. If I don't find here, I search through the examples to get a overview but that is time consuming and cumbersome.
Logs
[√] Flutter (on Microsoft Windows [Version 10.0.16299.125], locale en-US, channel alpha)
• Flutter at c:\sdks\flutter
• Framework revision 8f65fec5f5 (4 days ago), 2017-12-12 09:50:14 -0800
• Engine revision edaecdc8b8
• Tools Dart version 1.25.0-dev.11.0
• Engine Dart version 2.0.0-edge.d8ae797298c3a6cf8dc9f4558707bd2672224d3e
[√] Android toolchain - develop for Android devices (Android SDK 27.0.1)
• Android SDK at C:\Users\ride4\AppData\Local\Android\sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-27, build-tools 27.0.1
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)
[√] Android Studio (version 3.0)
• Android Studio at C:\Program Files\Android\Android Studio
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-915-b01)
[√] IntelliJ IDEA Community Edition (version 2017.2)
• Flutter plugin version 19.1
• Dart plugin version 172.4343.25
[√] Connected devices
• Android SDK built for x86 • emulator-5554 • android-x86 • Android 7.1.1 (API 25) (emulator)