move pics for testing to a Resources folder.

Author: joselfonseca

tests/Feature/Assets/UploadImageTest.php

@@ -20,7 +20,7 @@ function test_it_uploads_an_image_from_direct_file()
         $this->expectsEvents([
             AssetWasCreated::class
         ]);
-        $file = base64_encode(file_get_contents(base_path('tests/pic.png')));
+        $file = base64_encode(file_get_contents(base_path('tests/Resources/pic.png')));
         Passport::actingAs(
             factory(User::class)->create()
         );
@@ -53,7 +53,7 @@ function test_it_verifies_max_file_size()
         Passport::actingAs(
             factory(User::class)->create()
         );
-        $file = file_get_contents(__DIR__.'/../../bigpic.jpg');
+        $file = base64_encode(file_get_contents(base_path('tests/Resources/bigpic.jpg')));
         $server = $this->transformHeadersToServerVars([
             'Content-Type' => 'image/jpeg',
             'Content-Length' => mb_strlen($file)