Merge pull request #3 from lopn/master

add bower and  clear chart when refreshChart start

bower.json

@@ -0,0 +1,23 @@
+{
+  "name": "ng-echarts-bower",
+  "version": "1.0.0",
+  "homepage": "https://github.com/lopn/ng-echarts",
+  "description": "ng-echarts add bower",
+  "main": "dist/ng-echarts.js",
+  "moduleType": [
+    "node"
+  ],
+  "keywords": [
+    "angularjs",
+    "echarts",
+    "angular",
+    "chart"
+  ],
+  "license": "MIT",
+  "dependencies": {
+    "angular": "^1.3",
+    "echarts": "~2.2.7"
+  },
+  "devDependencies": {}
+
+}

dist/ng-echarts.js

@@ -31,6 +31,7 @@ angular.module('ng-echarts',['ng-echarts.theme'])
                 var chart = scope.chart;
 
                 function refreshChart(){
+                    chart.clear();
                     if(scope.config && scope.config.dataLoaded === false){
                         ctrl.showLoading(scope.config.loadingOption);
                     }
@@ -84,6 +85,7 @@ angular.module('ng-echarts',['ng-echarts.theme'])
             restrict:'EA'
         }
     }]);
+
 /**
  * Created by liekkas.zeng on 2015/1/7.
  */