refactor(core): adjust directory structure:

src/core/route/util.js

@@ -0,0 +1,11 @@
+export function cleanPath (path) {
+  return path.replace(/\/+/g, '/')
+}
+
+export function getLocation (base) {
+  let path = window.location.pathname
+  if (base && path.indexOf(base) === 0) {
+    path = path.slice(base.length)
+  }
+  return (path || '/') + window.location.search + window.location.hash
+}