chore(Update cz-conventional-changelog to 2.0.0): (#439)

Author: ssilve1989

package.json

@@ -74,7 +74,7 @@
   "dependencies": {
     "cachedir": "^1.1.0",
     "chalk": "1.1.3",
-    "cz-conventional-changelog": "1.2.0",
+    "cz-conventional-changelog": "2.0.0",
     "dedent": "0.6.0",
     "detect-indent": "4.0.0",
     "find-node-modules": "1.0.4",