Upgrade devDependencies

package.json

@@ -40,20 +40,20 @@
     "chai": "^3.5.0",
     "chai-as-promised": "^5.2.0",
     "del": "^2.2.0",
-    "fs-extra": "^0.26.7",
+    "fs-extra": "^0.30.0",
     "fs-promise": "^0.5.0",
-    "globule": "^0.2.0",
+    "globule": "^1.0.0",
     "gulp": "^3.9.1",
     "gulp-babel": "^6.1.2",
     "gulp-coveralls": "^0.1.4",
     "gulp-if": "^2.0.0",
-    "gulp-istanbul": "^0.10.3",
+    "gulp-istanbul": "^1.0.0",
     "gulp-load-plugins": "^1.2.0",
     "gulp-mocha": "^2.2.0",
     "gulp-notify": "^2.2.0",
     "gulp-plumber": "^1.1.0",
     "gulp-sourcemaps": "^1.6.0",
-    "gulp-standard": "^6.0.5",
+    "gulp-standard": "^7.0.1",
     "gulp-util": "^3.0.7",
     "isparta": "^4.0.0",
     "json-stable-stringify": "^1.0.1",