Make crate-readme component scroll to URL fragment if specified

Fixes #1847

Author: locks

app/components/crate-readme.js

@@ -7,5 +7,12 @@ export default Component.extend({
     this.$('pre > code').each(function() {
       window.Prism.highlightElement(this);
     });
+    this.scrollToFragment();
+  },
+
+  scrollToFragment() {
+    if (window.location.hash) {
+      window.location.href = window.location.href; // eslint-disable-line no-self-assign
+    }
   },
 });