Add caching detail in doc (#13112)

* Add caching detail in doc * review

Add caching detail in doc (#13112)
* Add caching detail in doc * review
765dd80e · xster · GitHub · d79c12e5 · 765dd80e
Unverified Commit 765dd80e authored Nov 22, 2017 by xster Committed by GitHub Nov 22, 2017
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image.dart packages/flutter/lib/src/widgets/image.dart +2 -0

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--- a/packages/flutter/lib/src/widgets/image.dart
+++ b/packages/flutter/lib/src/widgets/image.dart
@@ -128,6 +128,8 @@ class Image extends StatefulWidget {
  /// Creates a widget that displays an [ImageStream] obtained from the network.
  ///
  /// The [src], [scale], and [repeat] arguments must not be null.
+  ///
+  /// All network images are cached regardless of HTTP headers.
  Image.network(String src, {
    Key key,
    double scale: 1.0,