feat(build): add git-cz for semantic versioned commits

Use commitzen to standardize the commit syntax and to allow easy semantic versioning of

electron-forge

.cz.js

@@ -0,0 +1,24 @@
+module.exports = {
+  types: [
+    {value: 'feat',     name: 'feat:     A new feature'},
+    {value: 'fix',      name: 'fix:      A bug fix'},
+    {value: 'docs',     name: 'docs:     Documentation only changes'},
+    {value: 'style',    name: 'style:    Changes that do not affect the meaning of the code\n            (white-space, formatting, missing semi-colons, etc)'},
+    {value: 'refactor', name: 'refactor: A code change that neither fixes a bug nor adds a feature'},
+    {value: 'perf',     name: 'perf:     A code change that improves performance'},
+    {value: 'test',     name: 'test:     Adding missing tests'},
+    {value: 'chore',    name: 'chore:    Changes to the build process or auxiliary tools\n            and libraries such as documentation generation'},
+    {value: 'revert',   name: 'revert:   Revert to a commit'},
+    {value: 'WIP',      name: 'WIP:      Work in progress'},
+  ],
+  scopes: [
+    { name: 'maker' },
+    { name: 'packager' },
+    { name: 'linter' },
+    { name: 'starter' },
+    { name: 'tests' },
+    { name: 'initializer' },
+    { name: 'generic' },
+  ],
+  allowCustomScopes: true,
+}

package.json

@@ -9,6 +9,8 @@
   },
   "scripts": {
     "build": "gulp build",
+    "precommit": "npm run lint",
+    "commit": "git-cz",
     "lint": "eslint src test",
     "prepublish": "npm run build",
     "test": "npm run lint && mocha test --compilers js:babel-register --timeout=300000",
@@ -23,6 +25,8 @@
     "babel-plugin-transform-runtime": "^6.15.0",
     "babel-preset-es2015": "^6.16.0",
     "chai": "^3.5.0",
+    "commitizen": "^2.8.6",
+    "cz-customizable": "4.0.0",
     "eslint": "^3.7.1",
     "eslint-config-airbnb-base": "^8.0.0",
     "eslint-plugin-import": "^1.16.0",
@@ -63,5 +67,13 @@
     "username": "^2.2.2",
     "yarn-or-npm": "^2.0.2",
     "zip-folder": "^1.0.0"
+  },
+  "config": {
+    "commitizen": {
+      "path": "./node_modules/cz-customizable"
+    },
+    "cz-customizable": {
+      "config": "./.cz.js"
+    }
   }
 }