adding pie chart

Author: Madhuka

app/scripts/chart-factory/google-chart-factory.js

@@ -10,7 +10,8 @@ angular.module('apacheZeppelinGsocApp').factory('GoogleChartFactory', function(
   ChartFactory) {
   var ChartList = {
     'Bar': 'BarChart',
-    'Line': 'LineChart'
+    'Line': 'LineChart',
+    'Pie': 'PieChart'
   };
   //googleChart model (sample chart data model)
   //TO-DO Sample Data will remove after model set.

app/scripts/chart-factory/high-chart-factory.js

@@ -11,7 +11,8 @@ angular.module('apacheZeppelinGsocApp').factory('HighChartFactory', function(
   ChartFactory) {
   var ChartList = {
     'Bar': 'bar',
-    'Line': 'line'
+    'Line': 'line',
+    'Pie': 'pie'
   };
   //highChart model
   var HighChartChartModel = {

app/scripts/chart-factory/nvd3-chart-factory.js

@@ -10,7 +10,8 @@ angular.module('apacheZeppelinGsocApp').factory('NVD3ChartFactory', function(
   ChartFactory) {
   var ChartList = {
     'Bar': 'multiBarHorizontalChart',
-    'Line': 'lineChart'
+    'Line': 'lineChart',
+    'Pie': 'pieChart'
   };
   //NVD3 Chart model
   var NVD3ChartChartModel = {

app/scripts/config/chart-config.js

@@ -23,5 +23,5 @@ angular.module('apacheZeppelinGsocApp')
       'template': 'views/charts/googlechart.html'
     }],
     'dataFiles': ['car', 'bike'],
-    'chartTypes': ['Line', 'Bar']
+    'chartTypes': ['Line', 'Bar',"Pie"]
   });