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third_party/polymer/v1_0/components/paper-spinner/README.md

-paper-spinner
-=============
-
-Element providing material design circular spinner.
-
-##### Example
-
-```html
-<paper-spinner active></paper-spinner>
-```
-
-The default spinner cycles between four layers of colors; by default they are
-blue, red, yellow and green. It can be customized so that it uses one color only
-by setting all the layer colors to the same value.
-
-##### Example
-
-```html
-<style is="custom-style">
-  paper-spinner .rainbow {
-    --paper-spinner-layer-1-color: yellow;
-    --paper-spinner-layer-2-color: red;
-    --paper-spinner-layer-3-color: blue;
-    --paper-spinner-layer-4-color: green;
-  }
-
-  paper-spinner .red {
-    --paper-spinner-layer-1-color: red;
-    --paper-spinner-layer-2-color: red;
-    --paper-spinner-layer-3-color: red;
-    --paper-spinner-layer-4-color: red;
-  }
-</style>
-```
-
-Alt attribute should be set to provide adequate context for accessibility. If not provided,
-it defaults to 'loading'.
-Empty alt can be provided to mark the element as decorative if alternative content is provided
-in another form (e.g. a text block following the spinner).
-
-##### Example
-
-```html
-<paper-spinner alt="Loading contacts list" active></paper-spinner>
-```