Add travis and editorconfig file

.editorconfig

@@ -0,0 +1,16 @@
+# editorconfig.org
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.md]
+trim_trailing_whitespace = false
+
+[package.json]
+indent_size = 2

.travis.yml

@@ -0,0 +1,11 @@
+sudo: false
+language: node_js
+
+node_js:
+  - stable
+
+install:
+  - npm install
+
+script:
+  - npm test

test/test.legend.js

@@ -18,7 +18,7 @@ var chartDataPie = {
 function click(el){
     var ev = document.createEvent('MouseEvent');
     ev.initMouseEvent(
-        "click",
+        'click',
         true, true,
         window, null,
         0, 0, 0, 0,