meteor-button.html

<link rel="import" href="/packages/gfk_polymer/bower_components/polymer/polymer.html">

<polymer-element name="meteor-button" attributes="buttontype disabled action extraclass spinner href">
    <template>
        <link rel="stylesheet" href="meteor-button.css">

        <button on-click="{{onClick}}" class="btn {{extraclass}}" type="button">
            <template if="{{spinner}}">
                Spinning
            </template>
            <span><content></content></span>
        </button>
    </template>

    <script>
        Polymer('meteor-button', {
            onClick: function () {
                this.fire(this.action);
            },
            href: '',
            buttontype: '',
            disabled: false,
            action: '',
            extraclass: '',
            spinner: false
        });
    </script>
</polymer-element>