feat(meta): add author property (#41)

Author: TheAlexLichter

Diff for: docs/modules/meta.md

@@ -47,6 +47,10 @@ Please read this resources before you enable `mobileAppIOS` option:
 - Default: *npm_package_name*
 - Meta: `title`
 
+**author**
+- Default: *npm_package_author_name*
+- Meta: `author`
+
 **description**
 - Default: *npm_package_description*
 - Meta: `description`

Diff for: packages/meta/index.js

@@ -19,6 +19,7 @@ function generateMeta (_options) {
   // Defaults
   const defaults = {
     name: process.env.npm_package_name,
+    author: process.env.npm_package_author_name,
     description: process.env.npm_package_description,
     charset: 'utf-8',
     viewport: undefined,
@@ -103,6 +104,11 @@ function generateMeta (_options) {
     this.options.head.meta.push({ hid: 'apple-mobile-web-app-title', name: 'apple-mobile-web-app-title', content: title })
   }
 
+  // Author
+  if (options.author && !find(this.options.head.meta, 'name', 'author')) {
+    this.options.head.meta.push({ hid: 'author', name: 'author', content: options.author })
+  }
+
   // description meta
   if (options.description && !find(this.options.head.meta, 'name', 'description')) {
     this.options.head.meta.push({ hid: 'description', name: 'description', content: options.description })