Restore to use myself

- This had turned off temporally to support Node 0.10.x.

package.json

@@ -15,11 +15,11 @@
   "scripts": {
     "clean": "rimraf lib",
     "lint": "eslint src",
-    "build": "npm run clean && npm run lint && npm run build:babel",
+    "build": "npm-run-all clean lint build:babel",
     "build:babel": "babel src --out-dir lib",
-    "test": "npm run build && npm run test:mocha",
+    "test": "npm-run-all build test:mocha",
     "test:mocha": "mocha test/*.js --compilers js:espower-babel/guess --timeout 30000 --colors",
-    "testing": "npm run clean && npm run testing:build && npm run testing:mocha",
+    "testing": "npm-run-all clean --parallel testing:*",
     "testing:build": "npm run build:babel -- --watch --source-maps-inline",
     "testing:mocha": "npm run test:mocha -- --watch --growl",
     "test-task:env-check": "node test/tasks/env-check.js",
@@ -40,6 +40,7 @@
     "eslint": "^0.19.0",
     "espower-babel": "^2.0.0",
     "mocha": "^2.2.4",
+    "npm-run-all": "^1.2.1",
     "power-assert": "^0.10.2",
     "rimraf": "^2.3.2",
     "shelljs": "^0.4.0"