feat(breadcrumb): Add breadcrumb

lib/breadcrumb.js

@@ -0,0 +1,27 @@
+const url = require('url')
+
+module.exports = (modifier) => {
+  return (req, res, next) => {
+    const baseUrl = url.format({ protocol: req.protocol, host: req.get('host') })
+    const parts = url.parse(req.url).pathname.split('/').filter(Boolean)
+    let items = []
+
+    items.push({ label: 'Home', url: baseUrl })
+    items = items.concat(parts.map((part, i, array) => {
+      const path = array.slice(0, i + 1).join('/')
+      return {
+        label: part.replace(/-/g, ' '),
+        url: url.resolve(baseUrl, path),
+        path: path
+      }
+    })
+    )
+    if (modifier) {
+      items = items.map(modifier)
+    }
+    // make it global
+    req.app.locals.breadcrumb = items
+    // next operation
+    next()
+  }
+}