docs(changelog test): i test how to automate ChangeLog

node_modules/cz-conventional-changelog/README.md

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+# 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)
+[![Build Status](https://img.shields.io/travis/commitizen/cz-conventional-changelog.svg?style=flat-square)](https://travis-ci.org/commitizen/cz-conventional-changelog)
+
+Part of the [commitizen](https://github.com/commitizen/cz-cli) family. Prompts for [conventional changelog](https://github.com/conventional-changelog/conventional-changelog) standard.
+
+## Configuration
+
+### package.json
+
+Like commitizen, you specify the configuration of cz-conventional-changelog through the package.json's `config.commitizen` key.
+
+```json5
+{
+// ...  default values
+    "config": {
+        "commitizen": {
+            "path": "./node_modules/cz-conventional-changelog",
+            "disableScopeLowerCase": false,
+            "disableSubjectLowerCase": false,
+            "maxHeaderWidth": 100,
+            "maxLineWidth": 100,
+            "defaultType": "",
+            "defaultScope": "",
+            "defaultSubject": "",
+            "defaultBody": "",
+            "defaultIssues": "",
+            "types": {
+              ...
+              "feat": {
+                "description": "A new feature",
+                "title": "Features"
+              },
+              ...
+            }
+        }
+    }
+// ...
+}
+```
+
+### Environment variables
+
+The following environment varibles can be used to override any default configuration or package.json based configuration.
+
+* CZ_TYPE = defaultType
+* CZ_SCOPE = defaultScope
+* CZ_SUBJECT = defaultSubject
+* CZ_BODY = defaultBody
+* CZ_MAX_HEADER_WIDTH = maxHeaderWidth
+* CZ_MAX_LINE_WIDTH = maxLineWidth
+
+### Commitlint
+
+If using the [commitlint](https://github.com/conventional-changelog/commitlint) js library, the "maxHeaderWidth" configuration property will default to the configuration of the "header-max-length" rule instead of the hard coded value of 100.  This can be ovewritten by setting the 'maxHeaderWidth' configuration in package.json or the CZ_MAX_HEADER_WIDTH environment variable.