refactor(core): adjust directory structure:

src/core/config.js

@@ -0,0 +1,38 @@
+import { merge, camelize, isPrimitive } from './util/core'
+
+const config = merge({
+  el: '#app',
+  repo: '',
+  maxLevel: 6,
+  subMaxLevel: 0,
+  loadSidebar: null,
+  loadNavbar: null,
+  homepage: 'README.md',
+  coverpage: '',
+  basePath: '',
+  auto2top: false,
+  name: '',
+  themeColor: '',
+  nameLink: window.location.pathname,
+  ga: ''
+}, window.$docsify)
+
+const script = document.currentScript || [].slice.call(document.getElementsByTagName('script')).pop()
+
+if (script) {
+  for (const prop in config) {
+    const val = script.getAttribute('data-' + camelize(prop))
+
+    if (isPrimitive(val)) {
+      config[prop] = val === '' ? true : val
+    }
+  }
+
+  if (config.loadSidebar === true) config.loadSidebar = '_sidebar.md'
+  if (config.loadNavbar === true) config.loadNavbar = '_navbar.md'
+  if (config.coverpage === true) config.coverpage = '_coverpage.md'
+  if (config.repo === true) config.repo = ''
+  if (config.name === true) config.name = ''
+}
+
+export default config