Adds the Material Bar chart.

Author: wesalvaro

demo/index.html

@@ -190,6 +190,14 @@ <h2>Chart gallery</h2>
     rows='[["Jan", 31],["Feb", 28],["Mar", 31],["Apr", 30],["May", 31],["Jun", 30]]'>
   </google-chart>
 
+  <p>And here is the material bar chart:</p>
+
+  <google-chart
+    type="md-bar"
+    options='{"title": "Days in a month"}'
+    cols='[{"label": "Month", "type": "string"},{"label": "Days", "type": "number"}]'
+    rows='[["Jan", 31],["Feb", 28],["Mar", 31],["Apr", 30],["May", 31],["Jun", 30]]'></google-chart>
+
   <p>Here's a bubble chart:</p>
 
   <google-chart

google-chart-loader.html

@@ -18,6 +18,10 @@
     'bar': {
       ctor: 'BarChart',
     },
+    'md-bar': {
+      ctor: 'Bar',
+      pkg: 'bar',
+    },
     'bubble': {
       ctor: 'BubbleChart',
     },