update dep

Author: lisong

package.json

@@ -46,7 +46,7 @@
     "express": "^4.14.0",
     "extract-zip": "^1.6.0",
     "formidable": "^1.0.17",
-    "fs-extra": "^1.0.0",
+    "fs-extra": "^2.0.0",
     "helmet": "^3.1.0",
     "i18n": "^0.8.3",
     "jsonwebtoken": "^7.1.7",
@@ -56,10 +56,10 @@
     "moment": "^2.14.1",
     "morgan": "^1.7.0",
     "mysql": "^2.10.2",
-    "nodemailer": "^2.5.0",
+    "nodemailer": "^3.1.3",
     "pug": "^2.0.0-beta6",
     "qiniu": "^6.1.10",
-    "rand-token": "^0.2.1",
+    "rand-token": "^0.3.0",
     "recursive-fs": "^1.0.0",
     "redis": "^2.6.2",
     "request": "^2.72.0",
@@ -72,9 +72,9 @@
   },
   "devDependencies": {
     "istanbul": "^0.4.5",
-    "mocha": "^3.0.2",
-    "should": "^11.1.0",
-    "supertest": "^2.0.0"
+    "mocha": "^3.2.0",
+    "should": "^11.2.0",
+    "supertest": "^3.0.0"
   },
   "files": [
     "bin",