using babel-istanbul to cover the es6

Author: geelen

package.json

@@ -11,7 +11,7 @@
     "posttest": "npm run lint && npm run build",
     "autotest": "chokidar src test -c 'npm test'",
     "precover": "npm run lint && npm run build",
-    "cover": "istanbul cover node_modules/mocha/bin/_mocha",
+    "cover": "babel-istanbul cover node_modules/.bin/_mocha",
     "travis": "npm run cover -- --report lcovonly",
     "prepublish": "npm run build"
   },
@@ -40,13 +40,13 @@
   "devDependencies": {
     "babel": "^5.4.7",
     "babel-eslint": "^3.1.9",
+    "babel-istanbul": "^0.2.10",
     "babelify": "^6.1.2",
     "chokidar-cli": "^0.2.1",
     "codecov.io": "^0.1.2",
     "coveralls": "^2.11.2",
     "css-selector-parser": "^1.0.4",
     "eslint": "^0.21.2",
-    "istanbul": "^0.3.14",
     "mocha": "^2.2.5"
   }
 }