chore(package): update gulp-bump to version 2.0.1

http://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -37,7 +37,7 @@
     "eslint-plugin-standard": "^1.3.1",
     "glob-stream": "5.3.2",
     "gulp": "^3.9.0",
-    "gulp-bump": "^1.0.0",
+    "gulp-bump": "^2.0.1",
     "gulp-eslint": "^2.0.0-rc-3",
     "gulp-filter": "^4.0.0",
     "gulp-git": "^1.6.0",