Roll Observatory packages and add a roll script

packages/charted/examples/charts/demo_charts.css

Index: packages/charted/examples/charts/demo_charts.css
diff --git a/packages/charted/examples/charts/demo_charts.css b/packages/charted/examples/charts/demo_charts.css
new file mode 100644
index 0000000000000000000000000000000000000000..f04ceceb4d68f269ed026c40f381c2a54d305bc8
--- /dev/null
+++ b/packages/charted/examples/charts/demo_charts.css
@@ -0,0 +1,47 @@
+@import url(http://fonts.googleapis.com/css?family=Roboto);
+@import url(../packages/charted/charts/themes/quantum_theme.css);
+
+body {
+  font-family: Roboto, sans-serif;
+  color: #666;
+  font-size: 13px;
+  padding: 20px;
+}
+
+h1, h2, h3, h4, h5 {
+  font-weight: normal;
+  color: #333;
+}
+
+h1 {
+  font-size: 20px;
+}
+h2 {
+  font-size: 18px;
+}
+h3 {
+  font-size: 15px;
+}
+
+a:link, a:visited {
+  text-decoration: none;
+  color: #4D90FE;
+}
+
+.chart-wrapper {
+  padding: 40px;
+  width: 800px;
+}
+
+.chart-host-wrapper {
+  height: 300px;
+}
+.chart-legend-host {
+  max-height: 300px;
+  overflow-y: auto;
+}
+
+.chart-controls {
+  border-bottom: 1px solid #d3d3d3;
+  background-color: #eee;
+}