Re-configured samples page.

src/site/samples/filesystem/index.markdown

Index: src/site/samples/filesystem/index.markdown
diff --git a/src/site/samples/filesystem/index.markdown b/src/site/samples/filesystem/index.markdown
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index 0000000000000000000000000000000000000000..104aab000ac1027fa28bf60321d1c58ebf01d779
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+++ b/src/site/samples/filesystem/index.markdown
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+---
+layout: default
+title: Exploring the filesystem APIs
+live_example_url: example/index.html
+
+header:
+  css: ["/samples/samples.css"]
+---
+
+## {{ page.title }}
+
+This sample ports the example used in
+[this HTML5Rocks article](http://www.html5rocks.com/en/tutorials/file/filesystem/)
+by Eric Bidelman about using the FileSystem APIs.
+
+Read the
+[source](https://github.com/dart-lang/dart-samples/tree/master/web/html5/file/filesystem).
+
+<iframe class="running-app-frame"
+        style="height:400px;width:60%;"
+        src="{{page.live_example_url}}">
+</iframe>
+
+See all [samples](/samples/)