Show commit hash at index.

Author: Claas Augner

src/Telemetry/InboxApp.php

@@ -14,7 +14,7 @@ public function __construct(Repository $repo) {
 
     // Index.
     $this->get('/', function() {
-      return $this->index();
+      return trim(`git rev-parse --short --verify HEAD`);
     });
 
     // Count.
@@ -54,13 +54,4 @@ public function __construct(Repository $repo) {
       ], 500);
     });
   }
-
-  public function index() {
-    if (is_dir(__DIR__ . '/../.git')) {
-      exec('git rev-parse --short --verify HEAD', $output);
-      return $output[0];
-    } else {
-      return self::VERSION;
-    }
-  }
 }