Restructure theme, use autoloader

app/lib/Sage/Assets/JsonManifest.php

@@ -0,0 +1,29 @@
+<?php namespace Roots\Sage\Assets;
+
+/**
+ * Class JsonManifest
+ * @package Roots\Sage
+ * @author QWp6t
+ */
+class JsonManifest implements IManifest {
+  /** @var array */
+  protected $manifest = [];
+
+  /**
+   * JsonManifest constructor
+   * @param string $manifestPath Local filesystem path to JSON-encoded manifest
+   */
+  public function __construct($manifestPath) {
+    $this->manifest = file_exists($manifestPath) ? json_decode(file_get_contents($manifestPath), true) : [];
+  }
+
+  /** @inheritdoc */
+  public function get($file) {
+    return isset($this->manifest[$file]) ? $this->manifest[$file] : $file;
+  }
+
+  /** @inheritdoc */
+  public function getAll() {
+    return $this->manifest;
+  }
+}