Merge pull request #53 from commitizen/greenkeeper/initial

Update dependencies to enable Greenkeeper 🌴

Author: dmwelch

.travis.yml

@@ -17,3 +17,4 @@ jobs:
 branches:
   only:
     - master
+    - /^greenkeeper/.*$/

README.md

@@ -1,5 +1,7 @@
 # cz-conventional-changelog
 
+[![Greenkeeper badge](https://badges.greenkeeper.io/commitizen/cz-conventional-changelog.svg)](https://greenkeeper.io/)
+
 Status:
 [![npm version](https://img.shields.io/npm/v/cz-conventional-changelog.svg?style=flat-square)](https://www.npmjs.org/package/cz-conventional-changelog)
 [![npm downloads](https://img.shields.io/npm/dm/cz-conventional-changelog.svg?style=flat-square)](http://npm-stat.com/charts.html?package=cz-conventional-changelog&from=2015-08-01)